diff --git a/.forgejo/workflows/almalinux_8.yaml b/.forgejo/workflows/almalinux_8.yaml
index fea586a..98d5c0d 100644
--- a/.forgejo/workflows/almalinux_8.yaml
+++ b/.forgejo/workflows/almalinux_8.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: almalinux:8
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.forgejo/workflows/almalinux_9.yaml b/.forgejo/workflows/almalinux_9.yaml
index fa5ef03..9355241 100644
--- a/.forgejo/workflows/almalinux_9.yaml
+++ b/.forgejo/workflows/almalinux_9.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: almalinux:9
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.forgejo/workflows/alpine_3.18.yaml b/.forgejo/workflows/alpine_3.18.yaml
index c9f284c..0a1fd7f 100644
--- a/.forgejo/workflows/alpine_3.18.yaml
+++ b/.forgejo/workflows/alpine_3.18.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: alpine:3.18
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.forgejo/workflows/alpine_3.19.yaml b/.forgejo/workflows/alpine_3.19.yaml
index 8a2e539..6a736bc 100644
--- a/.forgejo/workflows/alpine_3.19.yaml
+++ b/.forgejo/workflows/alpine_3.19.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: alpine:3.19
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.forgejo/workflows/archlinux_base-20231112.0.191179.yaml b/.forgejo/workflows/archlinux_base-20231112.0.191179.yaml
index 1fb534e..484465a 100644
--- a/.forgejo/workflows/archlinux_base-20231112.0.191179.yaml
+++ b/.forgejo/workflows/archlinux_base-20231112.0.191179.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: archlinux:base-20231112.0.191179
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.forgejo/workflows/archlinux_base-20240101.0.204074.yaml b/.forgejo/workflows/archlinux_base-20240101.0.204074.yaml
index 01308a0..3de46f0 100644
--- a/.forgejo/workflows/archlinux_base-20240101.0.204074.yaml
+++ b/.forgejo/workflows/archlinux_base-20240101.0.204074.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: archlinux:base-20240101.0.204074
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.forgejo/workflows/debian_bookworm.yaml b/.forgejo/workflows/debian_bookworm.yaml
index 14e2fcd..4bc47bc 100644
--- a/.forgejo/workflows/debian_bookworm.yaml
+++ b/.forgejo/workflows/debian_bookworm.yaml
@@ -4,14 +4,14 @@ jobs:
     container:
       image: debian:bookworm
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
-    - run: cidd-synchronize
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
+    - run: pidd-synchronize
diff --git a/.forgejo/workflows/debian_bullseye.yaml b/.forgejo/workflows/debian_bullseye.yaml
index bae043d..8d5289e 100644
--- a/.forgejo/workflows/debian_bullseye.yaml
+++ b/.forgejo/workflows/debian_bullseye.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: debian:bullseye
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.forgejo/workflows/fedora_39.yaml b/.forgejo/workflows/fedora_39.yaml
index da70bd7..9d55290 100644
--- a/.forgejo/workflows/fedora_39.yaml
+++ b/.forgejo/workflows/fedora_39.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: fedora:39
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.forgejo/workflows/fedora_40.yaml b/.forgejo/workflows/fedora_40.yaml
index a3229d8..5eda681 100644
--- a/.forgejo/workflows/fedora_40.yaml
+++ b/.forgejo/workflows/fedora_40.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: fedora:40
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.forgejo/workflows/rockylinux_8.yaml b/.forgejo/workflows/rockylinux_8.yaml
index a4ab180..7909b85 100644
--- a/.forgejo/workflows/rockylinux_8.yaml
+++ b/.forgejo/workflows/rockylinux_8.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: rockylinux:8
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.forgejo/workflows/rockylinux_9.yaml b/.forgejo/workflows/rockylinux_9.yaml
index ade91f1..201e082 100644
--- a/.forgejo/workflows/rockylinux_9.yaml
+++ b/.forgejo/workflows/rockylinux_9.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: rockylinux:9
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.forgejo/workflows/ubuntu_jammy.yaml b/.forgejo/workflows/ubuntu_jammy.yaml
index 35c94da..0b57630 100644
--- a/.forgejo/workflows/ubuntu_jammy.yaml
+++ b/.forgejo/workflows/ubuntu_jammy.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: ubuntu:jammy
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.forgejo/workflows/ubuntu_noble.yaml b/.forgejo/workflows/ubuntu_noble.yaml
index fcee748..58950cc 100644
--- a/.forgejo/workflows/ubuntu_noble.yaml
+++ b/.forgejo/workflows/ubuntu_noble.yaml
@@ -4,13 +4,13 @@ jobs:
     container:
       image: ubuntu:noble
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        ${{vars.CIDD}}
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        ${{vars.PIDD}}
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
diff --git a/.github/workflows/debian:bookworm.yaml b/.github/workflows/debian:bookworm.yaml
index ae792ac..9790b19 100644
--- a/.github/workflows/debian:bookworm.yaml
+++ b/.github/workflows/debian:bookworm.yaml
@@ -5,14 +5,14 @@ jobs:
     container:
       image: debian:bookworm
     steps:
-    - name: cidd
+    - name: pidd
       run: >
-        echo '${{vars.CIDD}}' | tr -d '\r' | sh -s
-        "${{secrets.CIDD_SSH_KEY}}"
-        "${{vars.CIDD_SSH_HOSTS}}"
+        echo '${{vars.PIDD}}' | tr -d '\r' | sh -s
+        "${{secrets.PIDD_SSH_KEY}}"
+        "${{vars.PIDD_SSH_HOSTS}}"
 
-    - run: cidd-list-environment
-    - run: cidd-clone-branch
-    - run: cidd-build-project
-    - run: cidd-browse-workspace
-    - run: cidd-synchronize
+    - run: pidd-list-environment
+    - run: pidd-clone-branch
+    - run: pidd-build-project
+    - run: pidd-browse-workspace
+    - run: pidd-synchronize
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 012af4b..adab647 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,11 +2,11 @@ image: debian:bookworm
 job:
   script:
   - >
-    sh ${CIDD}
-    ${CIDD_SSH_KEY}
-    ${CIDD_SSH_HOSTS}
+    sh ${PIDD}
+    ${PIDD_SSH_KEY}
+    ${PIDD_SSH_HOSTS}
 
-  - cidd-list-environment
-  - cidd-clone-branch
-  - cidd-build-project
-  - cidd-browse-workspace
+  - pidd-list-environment
+  - pidd-clone-branch
+  - pidd-build-project
+  - pidd-browse-workspace
diff --git a/pidd.sh b/pidd.sh
index 111b73c..83d40b9 100644
--- a/pidd.sh
+++ b/pidd.sh
@@ -1,176 +1,176 @@
 #! /usr/bin/env sh
 
 # defaults
-[ -n "${CIDD_DNS}" ] || CIDD_DNS="\
+[ -n "${PIDD_DNS}" ] || PIDD_DNS="\
 9.9.9.9 \
 "
-[ -n "${CIDD_GIT_CHILD}" ] || CIDD_GIT_CHILD="cd"
-[ -n "${CIDD_GIT_PARENT}" ] || CIDD_GIT_PARENT="rwx"
+[ -n "${PIDD_GIT_CHILD}" ] || PIDD_GIT_CHILD="cd"
+[ -n "${PIDD_GIT_PARENT}" ] || PIDD_GIT_PARENT="rwx"
 
 # main
-cidd_main () {
-    cidd_set_environment_variables
-    cidd_set_packages_repositories
-    cidd_set_packages_configuration
+pidd_main () {
+    pidd_set_environment_variables
+    pidd_set_packages_repositories
+    pidd_set_packages_configuration
     #
-    cidd_list_working_directory
-    cidd_set_https_verification_off
-    cidd_set_dns_resolving
-    cidd_update_packages_catalog
-    cidd_install_packages_tools
-    cidd_install_ca_certificates
-    cidd_write_ca_certificates
-    cidd_update_ca_certificates
-    cidd_set_https_verification_on
-    cidd_update_packages_catalog
-    cidd_upgrade_packages
-    cidd_install_git
-    cidd_install_python
+    pidd_list_working_directory
+    pidd_set_https_verification_off
+    pidd_set_dns_resolving
+    pidd_update_packages_catalog
+    pidd_install_packages_tools
+    pidd_install_ca_certificates
+    pidd_write_ca_certificates
+    pidd_update_ca_certificates
+    pidd_set_https_verification_on
+    pidd_update_packages_catalog
+    pidd_upgrade_packages
+    pidd_install_git
+    pidd_install_python
     # TODO move to Python
-    cidd_install_rsync
+    pidd_install_rsync
     # TODO move to Python
-    cidd_install_ssh
-    cidd_clean_packages_cache
-    cidd_install_python_modules
-    cidd_write_python_module
-    cidd_switch_to_python "${@}"
+    pidd_install_ssh
+    pidd_clean_packages_cache
+    pidd_install_python_modules
+    pidd_write_python_module
+    pidd_switch_to_python "${@}"
 }
 
 # steps
 
-cidd_set_environment_variables () {
-    cidd_step "Set environment variables"
+pidd_set_environment_variables () {
+    pidd_step "Set environment variables"
     # set path
-    CIDD_PATH="$(realpath "${0}")"
-    cidd_echo "CIDD_PATH"
+    PIDD_PATH="$(realpath "${0}")"
+    pidd_echo "PIDD_PATH"
     # set operating system id
-    CIDD_OS_ID="$(cidd_grep_os ID)"
-    case "${CIDD_OS_ID}" in
-        "almalinux") CIDD_OS_ID="${CIDD_OS_ALMA}" ;;
-        "alpine") CIDD_OS_ID="${CIDD_OS_ALPINE}" ;;
-        "arch") CIDD_OS_ID="${CIDD_OS_ARCH}" ;;
-        "debian") CIDD_OS_ID="${CIDD_OS_DEBIAN}" ;;
-        "fedora") CIDD_OS_ID="${CIDD_OS_FEDORA}" ;;
-        "rocky") CIDD_OS_ID="${CIDD_OS_ROCKY}" ;;
-        "ubuntu") CIDD_OS_ID="${CIDD_OS_UBUNTU}" ;;
-        *) cidd_error_os "CIDD_OS_ID" ;;
+    PIDD_OS_ID="$(pidd_grep_os ID)"
+    case "${PIDD_OS_ID}" in
+        "almalinux") PIDD_OS_ID="${PIDD_OS_ALMA}" ;;
+        "alpine") PIDD_OS_ID="${PIDD_OS_ALPINE}" ;;
+        "arch") PIDD_OS_ID="${PIDD_OS_ARCH}" ;;
+        "debian") PIDD_OS_ID="${PIDD_OS_DEBIAN}" ;;
+        "fedora") PIDD_OS_ID="${PIDD_OS_FEDORA}" ;;
+        "rocky") PIDD_OS_ID="${PIDD_OS_ROCKY}" ;;
+        "ubuntu") PIDD_OS_ID="${PIDD_OS_UBUNTU}" ;;
+        *) pidd_error_os "PIDD_OS_ID" ;;
     esac
     # set operating system version
-    case "${CIDD_OS_ID}" in
-        "${CIDD_OS_ALMA}"|"${CIDD_OS_ARCH}"|"${CIDD_OS_FEDORA}"|"${CIDD_OS_ROCKY}")
-            CIDD_OS_VERSION=$(cidd_grep_os VERSION_ID \
+    case "${PIDD_OS_ID}" in
+        "${PIDD_OS_ALMA}"|"${PIDD_OS_ARCH}"|"${PIDD_OS_FEDORA}"|"${PIDD_OS_ROCKY}")
+            PIDD_OS_VERSION=$(pidd_grep_os VERSION_ID \
                 | sed "s|^\([0-9]\+\)\..*|\1|")
         ;;
-        "${CIDD_OS_ALPINE}")
-            CIDD_OS_VERSION=$(cidd_grep_os VERSION_ID \
+        "${PIDD_OS_ALPINE}")
+            PIDD_OS_VERSION=$(pidd_grep_os VERSION_ID \
                 | sed "s|^\([0-9]\+\.[0-9]\+\)\..*|\1|")
         ;;
-        "${CIDD_OS_DEBIAN}"|"${CIDD_OS_UBUNTU}")
-            CIDD_OS_VERSION="$(cidd_grep_os VERSION_CODENAME)"
+        "${PIDD_OS_DEBIAN}"|"${PIDD_OS_UBUNTU}")
+            PIDD_OS_VERSION="$(pidd_grep_os VERSION_CODENAME)"
         ;;
         *)
     esac
     # check operating system version
-    case "${CIDD_OS_ID}" in
-        "${CIDD_OS_ALMA}"|"${CIDD_OS_ROCKY}")
-            case "${CIDD_OS_VERSION}" in
+    case "${PIDD_OS_ID}" in
+        "${PIDD_OS_ALMA}"|"${PIDD_OS_ROCKY}")
+            case "${PIDD_OS_VERSION}" in
                 "8"|"9") ;;
-                *) cidd_error_os "CIDD_OS_VERSION" ;;
+                *) pidd_error_os "PIDD_OS_VERSION" ;;
             esac
         ;;
-        "${CIDD_OS_ALPINE}")
-            case "${CIDD_OS_VERSION}" in
+        "${PIDD_OS_ALPINE}")
+            case "${PIDD_OS_VERSION}" in
                 "3.18"|"3.19") ;;
-                *) cidd_error_os "CIDD_OS_VERSION" ;;
+                *) pidd_error_os "PIDD_OS_VERSION" ;;
             esac
         ;;
-        "${CIDD_OS_ARCH}")
-            case "${CIDD_OS_VERSION}" in
+        "${PIDD_OS_ARCH}")
+            case "${PIDD_OS_VERSION}" in
                 "20231112"|"20240101") ;;
-                *) cidd_error_os "CIDD_OS_VERSION" ;;
+                *) pidd_error_os "PIDD_OS_VERSION" ;;
             esac
         ;;
-        "${CIDD_OS_DEBIAN}")
-            case "${CIDD_OS_VERSION}" in
+        "${PIDD_OS_DEBIAN}")
+            case "${PIDD_OS_VERSION}" in
                 "bookworm"|"bullseye") ;;
-                *) cidd_error_os "CIDD_OS_VERSION" ;;
+                *) pidd_error_os "PIDD_OS_VERSION" ;;
             esac
         ;;
-        "${CIDD_OS_FEDORA}")
-            case "${CIDD_OS_VERSION}" in
+        "${PIDD_OS_FEDORA}")
+            case "${PIDD_OS_VERSION}" in
                 "39"|"40") ;;
-                *) cidd_error_os "CIDD_OS_VERSION" ;;
+                *) pidd_error_os "PIDD_OS_VERSION" ;;
             esac
         ;;
-        "${CIDD_OS_UBUNTU}")
-            case "${CIDD_OS_VERSION}" in
+        "${PIDD_OS_UBUNTU}")
+            case "${PIDD_OS_VERSION}" in
                 "jammy"|"noble") ;;
-                *) cidd_error_os "CIDD_OS_VERSION" ;;
+                *) pidd_error_os "PIDD_OS_VERSION" ;;
             esac
         ;;
         *)
     esac
-    cidd_split
-    cidd_echo "CIDD_OS_ID" "CIDD_OS_VERSION"
+    pidd_split
+    pidd_echo "PIDD_OS_ID" "PIDD_OS_VERSION"
     # universal
-    CIDD_DNS_FILE="/etc/resolv.conf"
-    CIDD_PKG_CA="ca-certificates"
-    CIDD_PKG_GIT="git"
+    PIDD_DNS_FILE="/etc/resolv.conf"
+    PIDD_PKG_CA="ca-certificates"
+    PIDD_PKG_GIT="git"
     # TODO move to Python
-    CIDD_PKG_RSYNC="rsync"
-    CIDD_PYTHON_ALIAS="python3"
-    cidd_split
-    cidd_echo "CIDD_DNS_FILE" "CIDD_PKG_CA" "CIDD_PKG_GIT" "CIDD_PYTHON_ALIAS"
+    PIDD_PKG_RSYNC="rsync"
+    PIDD_PYTHON_ALIAS="python3"
+    pidd_split
+    pidd_echo "PIDD_DNS_FILE" "PIDD_PKG_CA" "PIDD_PKG_GIT" "PIDD_PYTHON_ALIAS"
     # set ca command & root
-    case "${CIDD_OS_ID}" in
-        "${CIDD_OS_ALMA}"|"${CIDD_OS_FEDORA}"|"${CIDD_OS_ROCKY}")
-            CIDD_CA_ROOT="/etc/pki/ca-trust/source/anchors"
-            CIDD_CMD_CA="update-ca-trust"
+    case "${PIDD_OS_ID}" in
+        "${PIDD_OS_ALMA}"|"${PIDD_OS_FEDORA}"|"${PIDD_OS_ROCKY}")
+            PIDD_CA_ROOT="/etc/pki/ca-trust/source/anchors"
+            PIDD_CMD_CA="update-ca-trust"
         ;;
-        "${CIDD_OS_ALPINE}")
-            CIDD_CA_ROOT="/usr/local/share/ca-certificates"
-            CIDD_CMD_CA="update-ca-certificates"
+        "${PIDD_OS_ALPINE}")
+            PIDD_CA_ROOT="/usr/local/share/ca-certificates"
+            PIDD_CMD_CA="update-ca-certificates"
         ;;
-        "${CIDD_OS_ARCH}")
-            CIDD_CA_ROOT="/etc/ca-certificates/trust-source/anchors"
-            CIDD_CMD_CA="update-ca-trust"
+        "${PIDD_OS_ARCH}")
+            PIDD_CA_ROOT="/etc/ca-certificates/trust-source/anchors"
+            PIDD_CMD_CA="update-ca-trust"
         ;;
-        "${CIDD_OS_DEBIAN}"|"${CIDD_OS_UBUNTU}")
-            CIDD_CA_ROOT="/usr/local/share/ca-certificates"
-            CIDD_CMD_CA="update-ca-certificates"
+        "${PIDD_OS_DEBIAN}"|"${PIDD_OS_UBUNTU}")
+            PIDD_CA_ROOT="/usr/local/share/ca-certificates"
+            PIDD_CMD_CA="update-ca-certificates"
         ;;
         *)
     esac
-    cidd_split
-    cidd_echo "CIDD_CA_ROOT" "CIDD_CMD_CA"
+    pidd_split
+    pidd_echo "PIDD_CA_ROOT" "PIDD_CMD_CA"
     # set package manager
-    case "${CIDD_OS_ID}" in
-        "${CIDD_OS_ALPINE}")
-            CIDD_PM="${CIDD_PM_APK}"
+    case "${PIDD_OS_ID}" in
+        "${PIDD_OS_ALPINE}")
+            PIDD_PM="${PIDD_PM_APK}"
         ;;
-        "${CIDD_OS_DEBIAN}"|"${CIDD_OS_UBUNTU}")
-            CIDD_PM="${CIDD_PM_APT}"
+        "${PIDD_OS_DEBIAN}"|"${PIDD_OS_UBUNTU}")
+            PIDD_PM="${PIDD_PM_APT}"
         ;;
-        "${CIDD_OS_ALMA}"|"${CIDD_OS_FEDORA}"|"${CIDD_OS_ROCKY}")
-            CIDD_PM="${CIDD_PM_DNF}"
+        "${PIDD_OS_ALMA}"|"${PIDD_OS_FEDORA}"|"${PIDD_OS_ROCKY}")
+            PIDD_PM="${PIDD_PM_DNF}"
         ;;
-        "${CIDD_OS_ARCH}")
-            CIDD_PM="${CIDD_PM_PACMAN}"
+        "${PIDD_OS_ARCH}")
+            PIDD_PM="${PIDD_PM_PACMAN}"
         ;;
         *)
     esac
-    cidd_split
-    cidd_echo "CIDD_PM"
-    case "${CIDD_PM}" in
-        "${CIDD_PM_DNF}")
-            CIDD_PM_CLEAN="dnf clean all"
-            CIDD_PM_INSTALL="dnf install --assumeyes"
-            CIDD_PM_QUERY="rpm --query"
-            CIDD_PM_UPDATE="dnf makecache"
-            CIDD_PM_UPGRADE="dnf upgrade --assumeyes"
-            CIDD_PKG_PKG=""
-            CIDD_PM_CONF_PATH="/etc/dnf/dnf.conf"
-            CIDD_PM_CONF_TEXT="\
+    pidd_split
+    pidd_echo "PIDD_PM"
+    case "${PIDD_PM}" in
+        "${PIDD_PM_DNF}")
+            PIDD_PM_CLEAN="dnf clean all"
+            PIDD_PM_INSTALL="dnf install --assumeyes"
+            PIDD_PM_QUERY="rpm --query"
+            PIDD_PM_UPDATE="dnf makecache"
+            PIDD_PM_UPGRADE="dnf upgrade --assumeyes"
+            PIDD_PKG_PKG=""
+            PIDD_PM_CONF_PATH="/etc/dnf/dnf.conf"
+            PIDD_PM_CONF_TEXT="\
 [main]
 best=True
 clean_requirements_on_remove=True
@@ -178,302 +178,302 @@ gpgcheck=1
 installonly_limit=3
 skip_if_unavailable=False
 "
-            CIDD_PM_HTTPS_PATH="/etc/dnf/dnf.conf.d/https.conf"
-            CIDD_PM_HTTPS_TEXT="\
+            PIDD_PM_HTTPS_PATH="/etc/dnf/dnf.conf.d/https.conf"
+            PIDD_PM_HTTPS_TEXT="\
 sslverify=False
 "
         ;;
-        "${CIDD_PM_APK}")
-            CIDD_PM_CLEAN="apk cache purge"
-            CIDD_PM_INSTALL="apk add"
-            CIDD_PM_QUERY="apk info"
-            CIDD_PM_UPDATE="apk update"
-            CIDD_PM_UPGRADE="apk upgrade"
-            CIDD_PKG_PKG=""
-            CIDD_PM_CONF_PATH=""
-            CIDD_PM_CONF_TEXT=""
-            CIDD_PM_HTTPS_PATH="/etc/apk/repositories.d/https"
-            CIDD_PM_HTTPS_TEXT="\
+        "${PIDD_PM_APK}")
+            PIDD_PM_CLEAN="apk cache purge"
+            PIDD_PM_INSTALL="apk add"
+            PIDD_PM_QUERY="apk info"
+            PIDD_PM_UPDATE="apk update"
+            PIDD_PM_UPGRADE="apk upgrade"
+            PIDD_PKG_PKG=""
+            PIDD_PM_CONF_PATH=""
+            PIDD_PM_CONF_TEXT=""
+            PIDD_PM_HTTPS_PATH="/etc/apk/repositories.d/https"
+            PIDD_PM_HTTPS_TEXT="\
 --no-verify
 "
         ;;
-        "${CIDD_PM_PACMAN}")
-            CIDD_PM_CLEAN="pacman --sync --clean --noconfirm"
-            CIDD_PM_INSTALL="pacman --sync --noconfirm"
-            CIDD_PM_QUERY="pacman --query"
-            CIDD_PM_UPDATE="pacman --sync --refresh"
-            CIDD_PM_UPGRADE="pacman --sync --sysupgrade --noconfirm"
-            CIDD_PKG_PKG=""
-            CIDD_PM_CONF_PATH=""
-            CIDD_PM_CONF_TEXT=""
-            CIDD_PM_HTTPS_PATH="/etc/pacman.d/https.conf"
-            CIDD_PM_HTTPS_TEXT="\
+        "${PIDD_PM_PACMAN}")
+            PIDD_PM_CLEAN="pacman --sync --clean --noconfirm"
+            PIDD_PM_INSTALL="pacman --sync --noconfirm"
+            PIDD_PM_QUERY="pacman --query"
+            PIDD_PM_UPDATE="pacman --sync --refresh"
+            PIDD_PM_UPGRADE="pacman --sync --sysupgrade --noconfirm"
+            PIDD_PKG_PKG=""
+            PIDD_PM_CONF_PATH=""
+            PIDD_PM_CONF_TEXT=""
+            PIDD_PM_HTTPS_PATH="/etc/pacman.d/https.conf"
+            PIDD_PM_HTTPS_TEXT="\
 SSLVerify = No
 "
         ;;
-        "${CIDD_PM_APT}")
-            CIDD_PM_CLEAN="apt-get clean"
-            CIDD_PM_INSTALL="apt-get install --assume-yes"
-            CIDD_PM_QUERY="dpkg-query --show"
-            CIDD_PM_UPDATE="apt-get update"
-            CIDD_PM_UPGRADE="apt-get upgrade --assume-yes"
-            CIDD_PKG_PKG="apt-utils"
-            CIDD_PM_CONF_PATH="/etc/apt/apt.conf.d/apt.conf"
-            CIDD_PM_CONF_TEXT="\
+        "${PIDD_PM_APT}")
+            PIDD_PM_CLEAN="apt-get clean"
+            PIDD_PM_INSTALL="apt-get install --assume-yes"
+            PIDD_PM_QUERY="dpkg-query --show"
+            PIDD_PM_UPDATE="apt-get update"
+            PIDD_PM_UPGRADE="apt-get upgrade --assume-yes"
+            PIDD_PKG_PKG="apt-utils"
+            PIDD_PM_CONF_PATH="/etc/apt/apt.conf.d/apt.conf"
+            PIDD_PM_CONF_TEXT="\
 Acquire::Check-Valid-Until True;
 APT::Get::Show-Versions True;
 APT::Install-Recommends False;
 APT::Install-Suggests False;
 Dir::Etc::SourceParts \"\";
 "
-            CIDD_PM_HTTPS_PATH="/etc/apt/apt.conf.d/https"
-            CIDD_PM_HTTPS_TEXT="\
+            PIDD_PM_HTTPS_PATH="/etc/apt/apt.conf.d/https"
+            PIDD_PM_HTTPS_TEXT="\
 Acquire::https::Verify-Peer False;
 "
         ;;
         *)
     esac
-    cidd_split
-    cidd_echo "CIDD_PM_CLEAN" \
-        "CIDD_PM_INSTALL" "CIDD_PM_QUERY" "CIDD_PM_UPDATE" "CIDD_PM_UPGRADE"
-    cidd_split
-    cidd_echo "CIDD_PKG_PKG" "CIDD_PM_CONF_PATH" "CIDD_PM_HTTPS_PATH"
+    pidd_split
+    pidd_echo "PIDD_PM_CLEAN" \
+        "PIDD_PM_INSTALL" "PIDD_PM_QUERY" "PIDD_PM_UPDATE" "PIDD_PM_UPGRADE"
+    pidd_split
+    pidd_echo "PIDD_PKG_PKG" "PIDD_PM_CONF_PATH" "PIDD_PM_HTTPS_PATH"
     # specific
-    case "${CIDD_OS_ID}" in
-        "${CIDD_OS_ALMA}")
-            CIDD_URL_DEFAULT="https://repo.almalinux.org/almalinux"
+    case "${PIDD_OS_ID}" in
+        "${PIDD_OS_ALMA}")
+            PIDD_URL_DEFAULT="https://repo.almalinux.org/almalinux"
         ;;
-        "${CIDD_OS_ALPINE}")
-            CIDD_URL_DEFAULT="https://dl-cdn.alpinelinux.org/alpine"
+        "${PIDD_OS_ALPINE}")
+            PIDD_URL_DEFAULT="https://dl-cdn.alpinelinux.org/alpine"
         ;;
-        "${CIDD_OS_ARCH}")
-            CIDD_URL_DEFAULT="https://geo.mirror.pkgbuild.com"
+        "${PIDD_OS_ARCH}")
+            PIDD_URL_DEFAULT="https://geo.mirror.pkgbuild.com"
         ;;
-        "${CIDD_OS_DEBIAN}")
-            CIDD_URL_DEFAULT="http://deb.debian.org/debian"
+        "${PIDD_OS_DEBIAN}")
+            PIDD_URL_DEFAULT="http://deb.debian.org/debian"
         ;;
-        "${CIDD_OS_FEDORA}")
-            CIDD_URL_DEFAULT="http://download.example/pub/fedora/linux/releases"
+        "${PIDD_OS_FEDORA}")
+            PIDD_URL_DEFAULT="http://download.example/pub/fedora/linux/releases"
         ;;
-        "${CIDD_OS_ROCKY}")
-            CIDD_URL_DEFAULT="http://dl.rockylinux.org/\$contentdir"
+        "${PIDD_OS_ROCKY}")
+            PIDD_URL_DEFAULT="http://dl.rockylinux.org/\$contentdir"
         ;;
-        "${CIDD_OS_UBUNTU}")
-            CIDD_URL_DEFAULT="http://archive.ubuntu.com/ubuntu"
+        "${PIDD_OS_UBUNTU}")
+            PIDD_URL_DEFAULT="http://archive.ubuntu.com/ubuntu"
         ;;
         *)
     esac
-    CIDD_URL_CHOSEN="${CIDD_URL_DEFAULT}"
-    case "${CIDD_OS_ID}" in
-        "${CIDD_OS_ALMA}")
-            [ -n "${CIDD_URL_ALMA}" ] && CIDD_URL_CHOSEN="${CIDD_URL_ALMA}"
+    PIDD_URL_CHOSEN="${PIDD_URL_DEFAULT}"
+    case "${PIDD_OS_ID}" in
+        "${PIDD_OS_ALMA}")
+            [ -n "${PIDD_URL_ALMA}" ] && PIDD_URL_CHOSEN="${PIDD_URL_ALMA}"
         ;;
-        "${CIDD_OS_ALPINE}")
-            [ -n "${CIDD_URL_ALPINE}" ] && CIDD_URL_CHOSEN="${CIDD_URL_ALPINE}"
+        "${PIDD_OS_ALPINE}")
+            [ -n "${PIDD_URL_ALPINE}" ] && PIDD_URL_CHOSEN="${PIDD_URL_ALPINE}"
         ;;
-        "${CIDD_OS_ARCH}")
-            [ -n "${CIDD_URL_ARCH}" ] && CIDD_URL_CHOSEN="${CIDD_URL_ARCH}"
+        "${PIDD_OS_ARCH}")
+            [ -n "${PIDD_URL_ARCH}" ] && PIDD_URL_CHOSEN="${PIDD_URL_ARCH}"
         ;;
-        "${CIDD_OS_DEBIAN}")
-            [ -n "${CIDD_URL_DEBIAN}" ] && CIDD_URL_CHOSEN="${CIDD_URL_DEBIAN}" \
-            || CIDD_URL_CHOSEN="https://deb.debian.org/debian"
+        "${PIDD_OS_DEBIAN}")
+            [ -n "${PIDD_URL_DEBIAN}" ] && PIDD_URL_CHOSEN="${PIDD_URL_DEBIAN}" \
+            || PIDD_URL_CHOSEN="https://deb.debian.org/debian"
         ;;
-        "${CIDD_OS_FEDORA}")
-            [ -n "${CIDD_URL_FEDORA}" ] && CIDD_URL_CHOSEN="${CIDD_URL_FEDORA}" \
-            || CIDD_URL_CHOSEN="https://rpmfind.net/linux/fedora/linux/releases"
+        "${PIDD_OS_FEDORA}")
+            [ -n "${PIDD_URL_FEDORA}" ] && PIDD_URL_CHOSEN="${PIDD_URL_FEDORA}" \
+            || PIDD_URL_CHOSEN="https://rpmfind.net/linux/fedora/linux/releases"
         ;;
-        "${CIDD_OS_ROCKY}")
-            [ -n "${CIDD_URL_ROCKY}" ] && CIDD_URL_CHOSEN="${CIDD_URL_ROCKY}" \
-            || CIDD_URL_CHOSEN="https://dl.rockylinux.org/\$contentdir"
+        "${PIDD_OS_ROCKY}")
+            [ -n "${PIDD_URL_ROCKY}" ] && PIDD_URL_CHOSEN="${PIDD_URL_ROCKY}" \
+            || PIDD_URL_CHOSEN="https://dl.rockylinux.org/\$contentdir"
         ;;
-        "${CIDD_OS_UBUNTU}")
-            [ -n "${CIDD_URL_UBUNTU}" ] && CIDD_URL_CHOSEN="${CIDD_URL_UBUNTU}" \
-            || CIDD_URL_CHOSEN="https://ubuntu.mirrors.ovh.net/ubuntu"
+        "${PIDD_OS_UBUNTU}")
+            [ -n "${PIDD_URL_UBUNTU}" ] && PIDD_URL_CHOSEN="${PIDD_URL_UBUNTU}" \
+            || PIDD_URL_CHOSEN="https://ubuntu.mirrors.ovh.net/ubuntu"
         ;;
         *)
     esac
-    cidd_split
-    cidd_echo "CIDD_URL_DEFAULT" "CIDD_URL_CHOSEN"
+    pidd_split
+    pidd_echo "PIDD_URL_DEFAULT" "PIDD_URL_CHOSEN"
     # set python command & package
-    case "${CIDD_OS_ID}" in
-        "${CIDD_OS_ALMA}"|"${CIDD_OS_ROCKY}")
-            CIDD_PYTHON_COMMAND="python3.11"
-            CIDD_PYTHON_PACKAGE="python3.11"
+    case "${PIDD_OS_ID}" in
+        "${PIDD_OS_ALMA}"|"${PIDD_OS_ROCKY}")
+            PIDD_PYTHON_COMMAND="python3.11"
+            PIDD_PYTHON_PACKAGE="python3.11"
         ;;
-        "${CIDD_OS_ALPINE}")
-            CIDD_PYTHON_COMMAND="python3.11"
-            CIDD_PYTHON_PACKAGE="python3"
+        "${PIDD_OS_ALPINE}")
+            PIDD_PYTHON_COMMAND="python3.11"
+            PIDD_PYTHON_PACKAGE="python3"
         ;;
-        "${CIDD_OS_ARCH}")
-            CIDD_PYTHON_COMMAND="python3.12"
-            CIDD_PYTHON_PACKAGE="python"
+        "${PIDD_OS_ARCH}")
+            PIDD_PYTHON_COMMAND="python3.12"
+            PIDD_PYTHON_PACKAGE="python"
         ;;
-        "${CIDD_OS_DEBIAN}")
-            case "${CIDD_OS_VERSION}" in
-                "bookworm") CIDD_PYTHON_COMMAND="python3.11" ;;
-                "bullseye") CIDD_PYTHON_COMMAND="python3.9" ;;
+        "${PIDD_OS_DEBIAN}")
+            case "${PIDD_OS_VERSION}" in
+                "bookworm") PIDD_PYTHON_COMMAND="python3.11" ;;
+                "bullseye") PIDD_PYTHON_COMMAND="python3.9" ;;
                 *)
             esac
-            CIDD_PYTHON_PACKAGE="python3"
+            PIDD_PYTHON_PACKAGE="python3"
         ;;
-        "${CIDD_OS_FEDORA}")
-            CIDD_PYTHON_COMMAND="python3.12"
-            CIDD_PYTHON_PACKAGE="python3"
+        "${PIDD_OS_FEDORA}")
+            PIDD_PYTHON_COMMAND="python3.12"
+            PIDD_PYTHON_PACKAGE="python3"
         ;;
-        "${CIDD_OS_UBUNTU}")
-            case "${CIDD_OS_VERSION}" in
-                "noble") CIDD_PYTHON_COMMAND="python3.12" ;;
-                "jammy") CIDD_PYTHON_COMMAND="python3.10" ;;
+        "${PIDD_OS_UBUNTU}")
+            case "${PIDD_OS_VERSION}" in
+                "noble") PIDD_PYTHON_COMMAND="python3.12" ;;
+                "jammy") PIDD_PYTHON_COMMAND="python3.10" ;;
                 *)
             esac
-            CIDD_PYTHON_PACKAGE="python3"
+            PIDD_PYTHON_PACKAGE="python3"
         ;;
         *)
     esac
     # set python packages
-    case "${CIDD_OS_ID}" in
-        "${CIDD_OS_ALMA}"|"${CIDD_OS_FEDORA}"|"${CIDD_OS_ROCKY}")
-            CIDD_PYTHON_PACKAGES="/usr/lib64/${CIDD_PYTHON_COMMAND}/site-packages"
+    case "${PIDD_OS_ID}" in
+        "${PIDD_OS_ALMA}"|"${PIDD_OS_FEDORA}"|"${PIDD_OS_ROCKY}")
+            PIDD_PYTHON_PACKAGES="/usr/lib64/${PIDD_PYTHON_COMMAND}/site-packages"
         ;;
-        "${CIDD_OS_ALPINE}"|"${CIDD_OS_ARCH}")
-            CIDD_PYTHON_PACKAGES="/usr/lib/${CIDD_PYTHON_COMMAND}/site-packages"
+        "${PIDD_OS_ALPINE}"|"${PIDD_OS_ARCH}")
+            PIDD_PYTHON_PACKAGES="/usr/lib/${PIDD_PYTHON_COMMAND}/site-packages"
         ;;
-        "${CIDD_OS_DEBIAN}"|"${CIDD_OS_UBUNTU}")
-            CIDD_PYTHON_PACKAGES="/usr/lib/${CIDD_PYTHON_ALIAS}/dist-packages"
+        "${PIDD_OS_DEBIAN}"|"${PIDD_OS_UBUNTU}")
+            PIDD_PYTHON_PACKAGES="/usr/lib/${PIDD_PYTHON_ALIAS}/dist-packages"
         ;;
         *)
     esac
-    cidd_split
-    cidd_echo "CIDD_PYTHON_COMMAND" "CIDD_PYTHON_PACKAGE" "CIDD_PYTHON_PACKAGES"
+    pidd_split
+    pidd_echo "PIDD_PYTHON_COMMAND" "PIDD_PYTHON_PACKAGE" "PIDD_PYTHON_PACKAGES"
     # variables
-    [ -n "${CIDD_CA_1}" ] && CIDD_CA=true
+    [ -n "${PIDD_CA_1}" ] && PIDD_CA=true
     # continuous integration platform
     if [ -n "${GITHUB_ACTIONS}" ] ; then
         # github → gitea → forgejo
         if [ -n "${GITHUB_SERVER_URL}" ] ; then
-            CIDD_SERVER_URL="${GITHUB_SERVER_URL}"
+            PIDD_SERVER_URL="${GITHUB_SERVER_URL}"
         else
-            cidd_error_ci "GITHUB_SERVER_URL"
+            pidd_error_ci "GITHUB_SERVER_URL"
         fi
         if [ -n "${GITHUB_REPOSITORY}" ] ; then
-            CIDD_PROJECTS_GROUP="$(dirname "${GITHUB_REPOSITORY}")"
-            CIDD_PROJECT_NAME="$(basename "${GITHUB_REPOSITORY}")"
+            PIDD_PROJECTS_GROUP="$(dirname "${GITHUB_REPOSITORY}")"
+            PIDD_PROJECT_NAME="$(basename "${GITHUB_REPOSITORY}")"
         else
-            cidd_error_ci "GITHUB_REPOSITORY"
+            pidd_error_ci "GITHUB_REPOSITORY"
         fi
         if [ -n "${GITHUB_REF_NAME}" ] ; then
-            CIDD_PROJECT_BRANCH="${GITHUB_REF_NAME}"
+            PIDD_PROJECT_BRANCH="${GITHUB_REF_NAME}"
         else
-            cidd_error_ci "GITHUB_REF_NAME"
+            pidd_error_ci "GITHUB_REF_NAME"
         fi
     elif [ -n "${GITLAB_CI}" ] ; then
         # gitlab
         if [ -n "${CI_SERVER_URL}" ] ; then
-            CIDD_SERVER_URL="${CI_SERVER_URL}"
+            PIDD_SERVER_URL="${CI_SERVER_URL}"
         else
-            cidd_error_ci "CI_SERVER_URL"
+            pidd_error_ci "CI_SERVER_URL"
         fi
         if [ -n "${CI_PROJECT_PATH}" ] ; then
-            CIDD_PROJECTS_GROUP="$(dirname "${CI_PROJECT_PATH}")"
-            CIDD_PROJECT_NAME="$(basename "${CI_PROJECT_PATH}")"
+            PIDD_PROJECTS_GROUP="$(dirname "${CI_PROJECT_PATH}")"
+            PIDD_PROJECT_NAME="$(basename "${CI_PROJECT_PATH}")"
         else
-            cidd_error_ci "CI_PROJECT_PATH"
+            pidd_error_ci "CI_PROJECT_PATH"
         fi
         if [ -n "${CI_COMMIT_BRANCH}" ] ; then
-            CIDD_PROJECT_BRANCH="${CI_COMMIT_BRANCH}"
+            PIDD_PROJECT_BRANCH="${CI_COMMIT_BRANCH}"
         else
-            cidd_error_ci "CI_COMMIT_BRANCH"
+            pidd_error_ci "CI_COMMIT_BRANCH"
         fi
     else
         # unsupported
-        cidd_error_ci "ø"
+        pidd_error_ci "ø"
     fi
-    [ -n "${CIDD_SERVER_URL}" ] || cidd_error_ci "CIDD_SERVER_URL"
-    [ -n "${CIDD_PROJECTS_GROUP}" ] || cidd_error_ci "CIDD_PROJECTS_GROUP"
-    [ -n "${CIDD_PROJECT_NAME}" ] || cidd_error_ci "CIDD_PROJECT_NAME"
-    [ -n "${CIDD_PROJECT_BRANCH}" ] || cidd_error_ci "CIDD_PROJECT_BRANCH"
+    [ -n "${PIDD_SERVER_URL}" ] || pidd_error_ci "PIDD_SERVER_URL"
+    [ -n "${PIDD_PROJECTS_GROUP}" ] || pidd_error_ci "PIDD_PROJECTS_GROUP"
+    [ -n "${PIDD_PROJECT_NAME}" ] || pidd_error_ci "PIDD_PROJECT_NAME"
+    [ -n "${PIDD_PROJECT_BRANCH}" ] || pidd_error_ci "PIDD_PROJECT_BRANCH"
     #
-    CIDD_PROJECTS_URL="${CIDD_SERVER_URL}/${CIDD_PROJECTS_GROUP}"
+    PIDD_PROJECTS_URL="${PIDD_SERVER_URL}/${PIDD_PROJECTS_GROUP}"
     #
-    cidd_split
-    cidd_echo "CIDD_CA"
-    cidd_split
-    cidd_echo "CIDD_SERVER_URL" \
-        "CIDD_PROJECTS_GROUP" "CIDD_PROJECT_NAME" "CIDD_PROJECT_BRANCH"
-    cidd_split
-    cidd_echo "CIDD_PROJECTS_URL"
+    pidd_split
+    pidd_echo "PIDD_CA"
+    pidd_split
+    pidd_echo "PIDD_SERVER_URL" \
+        "PIDD_PROJECTS_GROUP" "PIDD_PROJECT_NAME" "PIDD_PROJECT_BRANCH"
+    pidd_split
+    pidd_echo "PIDD_PROJECTS_URL"
     # TODO move to Python
-    case "${CIDD_PM}" in
-        "${CIDD_PM_APK}"|"${CIDD_PM_APT}") CIDD_PKG_SSH="openssh-client" ;;
-        "${CIDD_PM_DNF}") CIDD_PKG_SSH="openssh-clients" ;;
-        "${CIDD_PM_PACMAN}") CIDD_PKG_SSH="openssh" ;;
+    case "${PIDD_PM}" in
+        "${PIDD_PM_APK}"|"${PIDD_PM_APT}") PIDD_PKG_SSH="openssh-client" ;;
+        "${PIDD_PM_DNF}") PIDD_PKG_SSH="openssh-clients" ;;
+        "${PIDD_PM_PACMAN}") PIDD_PKG_SSH="openssh" ;;
         *)
     esac
 }
 
-cidd_set_packages_repositories () {
-    cidd_step "Set packages repositories"
-    case "${CIDD_OS_ID}" in
-        "${CIDD_OS_ALMA}")
-            case "${CIDD_OS_VERSION}" in
+pidd_set_packages_repositories () {
+    pidd_step "Set packages repositories"
+    case "${PIDD_OS_ID}" in
+        "${PIDD_OS_ALMA}")
+            case "${PIDD_OS_VERSION}" in
                 "8") \
-cidd_set_packages_repositories__file="/etc/yum.repos.d/almalinux.repo" ;;
+pidd_set_packages_repositories__file="/etc/yum.repos.d/almalinux.repo" ;;
                 "9") \
-cidd_set_packages_repositories__file="/etc/yum.repos.d/almalinux-baseos.repo" ;;
+pidd_set_packages_repositories__file="/etc/yum.repos.d/almalinux-baseos.repo" ;;
                 *)
             esac
-            cidd_sed "${cidd_set_packages_repositories__file}" \
+            pidd_sed "${pidd_set_packages_repositories__file}" \
             "|^mirrorlist|# mirrorlist|" \
-            "|${CIDD_URL_DEFAULT}|${CIDD_URL_CHOSEN}|" \
+            "|${PIDD_URL_DEFAULT}|${PIDD_URL_CHOSEN}|" \
             "|^# baseurl|baseurl|"
         ;;
-        "${CIDD_OS_ALPINE}")
-            cidd_set_packages_repositories__file="/etc/apk/repositories"
-            cidd_write "${cidd_set_packages_repositories__file}" "\
-${CIDD_URL_CHOSEN}/v${CIDD_OS_VERSION}/main
-${CIDD_URL_CHOSEN}/v${CIDD_OS_VERSION}/community
+        "${PIDD_OS_ALPINE}")
+            pidd_set_packages_repositories__file="/etc/apk/repositories"
+            pidd_write "${pidd_set_packages_repositories__file}" "\
+${PIDD_URL_CHOSEN}/v${PIDD_OS_VERSION}/main
+${PIDD_URL_CHOSEN}/v${PIDD_OS_VERSION}/community
 "
         ;;
-        "${CIDD_OS_DEBIAN}")
-            cidd_set_packages_repositories__file="/etc/apt/sources.list"
-            cidd_write "${cidd_set_packages_repositories__file}" "\
-deb ${CIDD_URL_CHOSEN} ${CIDD_OS_VERSION} main
-deb ${CIDD_URL_CHOSEN} ${CIDD_OS_VERSION}-backports main
-deb ${CIDD_URL_CHOSEN} ${CIDD_OS_VERSION}-updates main
-deb ${CIDD_URL_CHOSEN}-security ${CIDD_OS_VERSION}-security main
+        "${PIDD_OS_DEBIAN}")
+            pidd_set_packages_repositories__file="/etc/apt/sources.list"
+            pidd_write "${pidd_set_packages_repositories__file}" "\
+deb ${PIDD_URL_CHOSEN} ${PIDD_OS_VERSION} main
+deb ${PIDD_URL_CHOSEN} ${PIDD_OS_VERSION}-backports main
+deb ${PIDD_URL_CHOSEN} ${PIDD_OS_VERSION}-updates main
+deb ${PIDD_URL_CHOSEN}-security ${PIDD_OS_VERSION}-security main
 "
         ;;
-        "${CIDD_OS_ROCKY}")
-            case "${CIDD_OS_VERSION}" in
+        "${PIDD_OS_ROCKY}")
+            case "${PIDD_OS_VERSION}" in
                 "8") \
-cidd_set_packages_repositories__file="/etc/yum.repos.d/Rocky-BaseOS.repo" ;;
+pidd_set_packages_repositories__file="/etc/yum.repos.d/Rocky-BaseOS.repo" ;;
                 "9") \
-cidd_set_packages_repositories__file="/etc/yum.repos.d/rocky.repo" ;;
+pidd_set_packages_repositories__file="/etc/yum.repos.d/rocky.repo" ;;
                 *)
             esac
-            cidd_sed "${cidd_set_packages_repositories__file}" \
+            pidd_sed "${pidd_set_packages_repositories__file}" \
             "|^mirrorlist|# mirrorlist|" \
-            "|${CIDD_URL_DEFAULT}|${CIDD_URL_CHOSEN}|" \
+            "|${PIDD_URL_DEFAULT}|${PIDD_URL_CHOSEN}|" \
             "|^#baseurl|baseurl|"
         ;;
-        "${CIDD_OS_UBUNTU}")
-            cidd_set_packages_repositories__file="/etc/apt/sources.list"
-            cidd_write "${cidd_set_packages_repositories__file}" "\
-deb ${CIDD_URL_CHOSEN} ${CIDD_OS_VERSION} main
-deb ${CIDD_URL_CHOSEN} ${CIDD_OS_VERSION}-backports main
-deb ${CIDD_URL_CHOSEN} ${CIDD_OS_VERSION}-updates main
-deb ${CIDD_URL_CHOSEN} ${CIDD_OS_VERSION}-security main
+        "${PIDD_OS_UBUNTU}")
+            pidd_set_packages_repositories__file="/etc/apt/sources.list"
+            pidd_write "${pidd_set_packages_repositories__file}" "\
+deb ${PIDD_URL_CHOSEN} ${PIDD_OS_VERSION} main
+deb ${PIDD_URL_CHOSEN} ${PIDD_OS_VERSION}-backports main
+deb ${PIDD_URL_CHOSEN} ${PIDD_OS_VERSION}-updates main
+deb ${PIDD_URL_CHOSEN} ${PIDD_OS_VERSION}-security main
 "
         ;;
         *)
     esac
 }
 
-cidd_set_packages_configuration () {
-    cidd_step "Set packages configuration"
-    cidd_write "${CIDD_PM_CONF_PATH}" "${CIDD_PM_CONF_TEXT}"
-    case "${CIDD_OS_ID}" in
-        "${CIDD_OS_DEBIAN}"|"${CIDD_OS_UBUNTU}")
+pidd_set_packages_configuration () {
+    pidd_step "Set packages configuration"
+    pidd_write "${PIDD_PM_CONF_PATH}" "${PIDD_PM_CONF_TEXT}"
+    case "${PIDD_OS_ID}" in
+        "${PIDD_OS_DEBIAN}"|"${PIDD_OS_UBUNTU}")
             export DEBIAN_FRONTEND="noninteractive"
         ;;
         *)
@@ -482,336 +482,336 @@ cidd_set_packages_configuration () {
 
 # agnostic steps
 
-cidd_list_working_directory () {
-    cidd_step "List working directory"
-    cidd_list_working_directory__path="$(realpath .)"
-    cidd_ls "${cidd_list_working_directory__path}"
+pidd_list_working_directory () {
+    pidd_step "List working directory"
+    pidd_list_working_directory__path="$(realpath .)"
+    pidd_ls "${pidd_list_working_directory__path}"
 }
 
-cidd_set_https_verification_off () {
-    if [ -n "${CIDD_CA}" ] || [ "${CIDD_PM}" = "${CIDD_PM_APT}" ] ; then
-        cidd_step "Set HTTPS verification off"
-        cidd_mkdir "$(dirname "${CIDD_PM_HTTPS_PATH}")"
-        cidd_write "${CIDD_PM_HTTPS_PATH}" "${CIDD_PM_HTTPS_TEXT}"
+pidd_set_https_verification_off () {
+    if [ -n "${PIDD_CA}" ] || [ "${PIDD_PM}" = "${PIDD_PM_APT}" ] ; then
+        pidd_step "Set HTTPS verification off"
+        pidd_mkdir "$(dirname "${PIDD_PM_HTTPS_PATH}")"
+        pidd_write "${PIDD_PM_HTTPS_PATH}" "${PIDD_PM_HTTPS_TEXT}"
     fi
 }
 
-cidd_set_dns_resolving () {
-    cidd_step "Set DNS resolving"
-    for cidd_set_dns_resolving__server in ${CIDD_DNS} ; do
-        cidd_set_dns_resolving__text="${cidd_set_dns_resolving__text}\
-nameserver ${cidd_set_dns_resolving__server}
+pidd_set_dns_resolving () {
+    pidd_step "Set DNS resolving"
+    for pidd_set_dns_resolving__server in ${PIDD_DNS} ; do
+        pidd_set_dns_resolving__text="${pidd_set_dns_resolving__text}\
+nameserver ${pidd_set_dns_resolving__server}
 "
     done
-    cidd_write "${CIDD_DNS_FILE}" "${cidd_set_dns_resolving__text}"
+    pidd_write "${PIDD_DNS_FILE}" "${pidd_set_dns_resolving__text}"
 }
 
-cidd_update_packages_catalog () {
-    cidd_step "Update packages catalog"
-    ${CIDD_PM_UPDATE} || exit
+pidd_update_packages_catalog () {
+    pidd_step "Update packages catalog"
+    ${PIDD_PM_UPDATE} || exit
 }
 
-cidd_install_packages_tools () {
-    cidd_step "Install packages tools"
-    cidd_install_package "${CIDD_PKG_PKG}"
+pidd_install_packages_tools () {
+    pidd_step "Install packages tools"
+    pidd_install_package "${PIDD_PKG_PKG}"
 }
 
-cidd_install_ca_certificates () {
-    cidd_step "Install CA"
-    cidd_install_package "${CIDD_PKG_CA}"
+pidd_install_ca_certificates () {
+    pidd_step "Install CA"
+    pidd_install_package "${PIDD_PKG_CA}"
 }
 
-cidd_write_ca_certificates () {
-    cidd_step "Write CA certificates"
-    cidd_mkdir "${CIDD_CA_ROOT}"
-    cidd_write_ca_certificates__index=1
-    eval "cidd_write_ca_certificates__text=\
-\"\${CIDD_CA_${cidd_write_ca_certificates__index}}\""
-    while [ -n "${cidd_write_ca_certificates__text}" ] ; do
-        cidd_write_ca_certificates__path="\
-${CIDD_CA_ROOT}/${cidd_write_ca_certificates__index}.crt"
-        cidd_split
-        cidd_write \
-        "${cidd_write_ca_certificates__path}" \
-        "${cidd_write_ca_certificates__text}"
-        cidd_openssl "${cidd_write_ca_certificates__path}"
-        cidd_write_ca_certificates__index=$((cidd_write_ca_certificates__index+1))
-        eval "cidd_write_ca_certificates__text=\
-\"\${CIDD_CA_${cidd_write_ca_certificates__index}}\""
+pidd_write_ca_certificates () {
+    pidd_step "Write CA certificates"
+    pidd_mkdir "${PIDD_CA_ROOT}"
+    pidd_write_ca_certificates__index=1
+    eval "pidd_write_ca_certificates__text=\
+\"\${PIDD_CA_${pidd_write_ca_certificates__index}}\""
+    while [ -n "${pidd_write_ca_certificates__text}" ] ; do
+        pidd_write_ca_certificates__path="\
+${PIDD_CA_ROOT}/${pidd_write_ca_certificates__index}.crt"
+        pidd_split
+        pidd_write \
+        "${pidd_write_ca_certificates__path}" \
+        "${pidd_write_ca_certificates__text}"
+        pidd_openssl "${pidd_write_ca_certificates__path}"
+        pidd_write_ca_certificates__index=$((pidd_write_ca_certificates__index+1))
+        eval "pidd_write_ca_certificates__text=\
+\"\${PIDD_CA_${pidd_write_ca_certificates__index}}\""
     done
 }
 
-cidd_update_ca_certificates () {
-    cidd_step "Update CA certificates"
-    ${CIDD_CMD_CA} || exit
+pidd_update_ca_certificates () {
+    pidd_step "Update CA certificates"
+    ${PIDD_CMD_CA} || exit
 }
 
-cidd_set_https_verification_on () {
-    cidd_step "Set HTTPS verification on"
-    cidd_rm "${CIDD_PM_HTTPS_PATH}"
+pidd_set_https_verification_on () {
+    pidd_step "Set HTTPS verification on"
+    pidd_rm "${PIDD_PM_HTTPS_PATH}"
 }
 
-cidd_upgrade_packages () {
-    cidd_step "Upgrade packages"
-    ${CIDD_PM_UPGRADE} || exit
+pidd_upgrade_packages () {
+    pidd_step "Upgrade packages"
+    ${PIDD_PM_UPGRADE} || exit
 }
 
-cidd_install_git () {
-    cidd_step "Install Git"
-    cidd_install_package "${CIDD_PKG_GIT}"
+pidd_install_git () {
+    pidd_step "Install Git"
+    pidd_install_package "${PIDD_PKG_GIT}"
 }
 
-cidd_install_python () {
-    cidd_step "Install Python"
-    cidd_install_package "${CIDD_PYTHON_PACKAGE}"
-    cidd_split
-    cidd_ln_python "${CIDD_PYTHON_COMMAND}"
+pidd_install_python () {
+    pidd_step "Install Python"
+    pidd_install_package "${PIDD_PYTHON_PACKAGE}"
+    pidd_split
+    pidd_ln_python "${PIDD_PYTHON_COMMAND}"
 }
 
 # TODO move to Python
-cidd_install_rsync () {
-    cidd_step "Install Rsync"
-    cidd_install_package "${CIDD_PKG_RSYNC}"
+pidd_install_rsync () {
+    pidd_step "Install Rsync"
+    pidd_install_package "${PIDD_PKG_RSYNC}"
 }
 
 # TODO move to Python
-cidd_install_ssh () {
-    cidd_step "Install SSH"
-    cidd_install_package "${CIDD_PKG_SSH}"
+pidd_install_ssh () {
+    pidd_step "Install SSH"
+    pidd_install_package "${PIDD_PKG_SSH}"
 }
 
-cidd_clean_packages_cache () {
-    cidd_step "Clean packages cache"
-    ${CIDD_PM_CLEAN} || exit
+pidd_clean_packages_cache () {
+    pidd_step "Clean packages cache"
+    ${PIDD_PM_CLEAN} || exit
 }
 
-cidd_install_python_modules () {
-    cidd_step "Install Python modules"
-    cidd_install_python_modules__root="$(mktemp --directory)" || exit
-    echo "→ ${cidd_install_python_modules__root}"
-    for cidd_install_python_modules__repository \
-    in "${CIDD_GIT_CHILD}" "${CIDD_GIT_PARENT}" ; do
-        cidd_split
-        cidd_install_python_modules__url="\
-${CIDD_PROJECTS_URL}/${cidd_install_python_modules__repository}"
+pidd_install_python_modules () {
+    pidd_step "Install Python modules"
+    pidd_install_python_modules__root="$(mktemp --directory)" || exit
+    echo "→ ${pidd_install_python_modules__root}"
+    for pidd_install_python_modules__repository \
+    in "${PIDD_GIT_CHILD}" "${PIDD_GIT_PARENT}" ; do
+        pidd_split
+        pidd_install_python_modules__url="\
+${PIDD_PROJECTS_URL}/${pidd_install_python_modules__repository}"
         echo "\
-${cidd_install_python_modules__url}
+${pidd_install_python_modules__url}
 ↓"
         git clone \
-        "${cidd_install_python_modules__url}" \
-        "${cidd_install_python_modules__root}\
-/${cidd_install_python_modules__repository}" \
+        "${pidd_install_python_modules__url}" \
+        "${pidd_install_python_modules__root}\
+/${pidd_install_python_modules__repository}" \
         || exit
-        cidd_install_python_modules__path="\
-${cidd_install_python_modules__root}\
-/${cidd_install_python_modules__repository}\
-/${cidd_install_python_modules__repository}"
+        pidd_install_python_modules__path="\
+${pidd_install_python_modules__root}\
+/${pidd_install_python_modules__repository}\
+/${pidd_install_python_modules__repository}"
         echo "\
-${cidd_install_python_modules__path}
+${pidd_install_python_modules__path}
 ↓
-${CIDD_PYTHON_PACKAGES}"
+${PIDD_PYTHON_PACKAGES}"
         cp --recursive \
-        "${cidd_install_python_modules__path}" "${CIDD_PYTHON_PACKAGES}" \
+        "${pidd_install_python_modules__path}" "${PIDD_PYTHON_PACKAGES}" \
         || exit
     done
-    cidd_split
-    cidd_ls "${CIDD_PYTHON_PACKAGES}"
-    cidd_split
-    cidd_rm "${cidd_install_python_modules__root}"
+    pidd_split
+    pidd_ls "${PIDD_PYTHON_PACKAGES}"
+    pidd_split
+    pidd_rm "${pidd_install_python_modules__root}"
 }
 
-cidd_write_python_module () {
-    cidd_step "Write Python module"
-    for cidd_write_python_module__variable \
+pidd_write_python_module () {
+    pidd_step "Write Python module"
+    for pidd_write_python_module__variable \
     in OPEN DOWN VERT SPLT __UP SHUT OS_ID OS_VERSION ; do
-        cidd_write_python_module__value="\
-$(cidd_echo "CIDD_${cidd_write_python_module__variable}")"
-        cidd_write_python_module__text="${cidd_write_python_module__text}\
-${cidd_write_python_module__value}
+        pidd_write_python_module__value="\
+$(pidd_echo "PIDD_${pidd_write_python_module__variable}")"
+        pidd_write_python_module__text="${pidd_write_python_module__text}\
+${pidd_write_python_module__value}
 "
     done
-    cidd_write "${CIDD_PYTHON_PACKAGES}/env.py" "${cidd_write_python_module__text}\
-CIDD_STEP = $((CIDD_STEP+1))
+    pidd_write "${PIDD_PYTHON_PACKAGES}/env.py" "${pidd_write_python_module__text}\
+PIDD_STEP = $((PIDD_STEP+1))
 "
 }
 
-cidd_switch_to_python () {
-    cidd_step "Switch to Python"
+pidd_switch_to_python () {
+    pidd_step "Switch to Python"
     echo "\
-${CIDD_PATH}
+${PIDD_PATH}
 ↓
-${CIDD_PYTHON_PACKAGES}/${CIDD_GIT_CHILD}"
-    "${CIDD_PYTHON_ALIAS}" -m "${CIDD_GIT_CHILD}" "${@}"
+${PIDD_PYTHON_PACKAGES}/${PIDD_GIT_CHILD}"
+    "${PIDD_PYTHON_ALIAS}" -m "${PIDD_GIT_CHILD}" "${@}"
 }
 
 # functions
 
-cidd_cat () {
-    cidd_cat__file="${1}"
-    if [ -n "${cidd_cat__file}" ] ; then
-        cidd_open "${cidd_cat__file}"
-        cat "${cidd_cat__file}" || exit
-        cidd_shut "${cidd_cat__file}"
+pidd_cat () {
+    pidd_cat__file="${1}"
+    if [ -n "${pidd_cat__file}" ] ; then
+        pidd_open "${pidd_cat__file}"
+        cat "${pidd_cat__file}" || exit
+        pidd_shut "${pidd_cat__file}"
     fi
 }
 
-cidd_echo () {
+pidd_echo () {
     if [ -n "${1}" ] ; then
-        for cidd_echo__name in "${@}" ; do
-            eval "cidd_echo__text=\"\${${cidd_echo__name}}\""
-            echo "${cidd_echo__name} = \"${cidd_echo__text}\""
+        for pidd_echo__name in "${@}" ; do
+            eval "pidd_echo__text=\"\${${pidd_echo__name}}\""
+            echo "${pidd_echo__name} = \"${pidd_echo__text}\""
         done
     fi
 }
 
-cidd_error_ci () {
+pidd_error_ci () {
     echo "× CI: ${*}"
-    exit "${CIDD_ERROR_CI}"
+    exit "${PIDD_ERROR_CI}"
 }
 
-cidd_error_os () {
-    cidd_error_os__variable="${1}"
+pidd_error_os () {
+    pidd_error_os__variable="${1}"
     printf "× OS: "
-    cidd_echo "${cidd_error_os__variable}"
-    exit "${CIDD_ERROR_OS}"
+    pidd_echo "${pidd_error_os__variable}"
+    exit "${PIDD_ERROR_OS}"
 }
 
-cidd_grep_os () {
-    cidd_grep_os__variable="${1}"
-    if [ -n "${cidd_grep_os__variable}" ] ; then
-        grep "^${cidd_grep_os__variable}=" "/etc/os-release" \
-        | sed "s|^${cidd_grep_os__variable}=||" \
+pidd_grep_os () {
+    pidd_grep_os__variable="${1}"
+    if [ -n "${pidd_grep_os__variable}" ] ; then
+        grep "^${pidd_grep_os__variable}=" "/etc/os-release" \
+        | sed "s|^${pidd_grep_os__variable}=||" \
         | sed "s|^\"\(.*\)\"$|\1|"
     fi
 }
 
-cidd_install_package () {
-    cidd_install_package__name="${1}"
-    if [ -n "${cidd_install_package__name}" ] ; then
-        ${CIDD_PM_INSTALL} "${cidd_install_package__name}" || exit
+pidd_install_package () {
+    pidd_install_package__name="${1}"
+    if [ -n "${pidd_install_package__name}" ] ; then
+        ${PIDD_PM_INSTALL} "${pidd_install_package__name}" || exit
     fi
 }
 
-cidd_ln_python () {
-    cidd_ln_python__command="${1}"
-    if [ -n "${cidd_ln_python__command}" ] ; then
-        echo "→ ${CIDD_PYTHON_ALIAS} → ${cidd_ln_python__command}"
-        ln -f -s "${cidd_ln_python__command}" "/usr/bin/${CIDD_PYTHON_ALIAS}" \
+pidd_ln_python () {
+    pidd_ln_python__command="${1}"
+    if [ -n "${pidd_ln_python__command}" ] ; then
+        echo "→ ${PIDD_PYTHON_ALIAS} → ${pidd_ln_python__command}"
+        ln -f -s "${pidd_ln_python__command}" "/usr/bin/${PIDD_PYTHON_ALIAS}" \
         || exit
     fi
 }
 
-cidd_ls () {
-    cidd_ls__path="${1}"
-    if [ -n "${cidd_ls__path}" ] ; then
-        cidd_open "${cidd_ls__path}"
-        ls -a -l "${cidd_ls__path}" || exit
-        cidd_shut "${cidd_ls__path}"
+pidd_ls () {
+    pidd_ls__path="${1}"
+    if [ -n "${pidd_ls__path}" ] ; then
+        pidd_open "${pidd_ls__path}"
+        ls -a -l "${pidd_ls__path}" || exit
+        pidd_shut "${pidd_ls__path}"
     fi
 }
 
-cidd_mkdir () {
-    cidd_mkdir__path="${1}"
-    if [ -n "${cidd_mkdir__path}" ] ; then
-        echo "→ ${cidd_mkdir__path}"
-        mkdir --parents "${cidd_mkdir__path}" || exit
+pidd_mkdir () {
+    pidd_mkdir__path="${1}"
+    if [ -n "${pidd_mkdir__path}" ] ; then
+        echo "→ ${pidd_mkdir__path}"
+        mkdir --parents "${pidd_mkdir__path}" || exit
     fi
 }
 
-cidd_open () {
-    echo "${CIDD_OPEN}${*}"
+pidd_open () {
+    echo "${PIDD_OPEN}${*}"
 }
 
-cidd_openssl () {
-    cidd_openssl__file="${1}"
-    if [ -f "${cidd_openssl__file}" ] ; then
+pidd_openssl () {
+    pidd_openssl__file="${1}"
+    if [ -f "${pidd_openssl__file}" ] ; then
         openssl x509 \
-        -in "${cidd_openssl__file}" \
+        -in "${pidd_openssl__file}" \
         -noout -text \
         || exit
     fi
 }
 
-cidd_rm () {
-    cidd_rm__path="${1}"
-    if [ -e "${cidd_rm__path}" ] ; then
-        echo "← ${cidd_rm__path}"
-        rm -r "${cidd_rm__path}" || exit
+pidd_rm () {
+    pidd_rm__path="${1}"
+    if [ -e "${pidd_rm__path}" ] ; then
+        echo "← ${pidd_rm__path}"
+        rm -r "${pidd_rm__path}" || exit
     fi
 }
 
-cidd_sed () {
-    cidd_sed__file="${1}"
+pidd_sed () {
+    pidd_sed__file="${1}"
     shift
-    if [ -f "${cidd_sed__file}" ] ; then
-        cidd_cat "${cidd_sed__file}"
-        for cidd_sed__regex in "${@}" ; do
-            sed --in-place "s${cidd_sed__regex}g" "${cidd_sed__file}" \
-            && cidd_cat "${cidd_sed__file}" \
+    if [ -f "${pidd_sed__file}" ] ; then
+        pidd_cat "${pidd_sed__file}"
+        for pidd_sed__regex in "${@}" ; do
+            sed --in-place "s${pidd_sed__regex}g" "${pidd_sed__file}" \
+            && pidd_cat "${pidd_sed__file}" \
             || exit
         done
     fi
 }
 
-cidd_shut () {
-    echo "${CIDD_SHUT}${*}"
+pidd_shut () {
+    echo "${PIDD_SHUT}${*}"
 }
 
-cidd_split () {
-    echo "${CIDD_SPLT}"
+pidd_split () {
+    echo "${PIDD_SPLT}"
 }
 
-cidd_step () {
-    CIDD_STEP=$((CIDD_STEP+1))
+pidd_step () {
+    PIDD_STEP=$((PIDD_STEP+1))
     echo "\
-${CIDD_DOWN}
-${CIDD_VERT} ${CIDD_STEP} ${*}
-${CIDD___UP}"
+${PIDD_DOWN}
+${PIDD_VERT} ${PIDD_STEP} ${*}
+${PIDD___UP}"
 }
 
-cidd_write () {
-    cidd_write__file="${1}"
-    cidd_write__text="${2}"
-    if [ -n "${cidd_write__file}" ] ; then
-        [ -f "${cidd_write__file}" ] && cidd_cat "${cidd_write__file}"
-        echo "→ ${cidd_write__file}"
-        printf "%s" "${cidd_write__text}" > "${cidd_write__file}" || exit
-        cidd_cat "${cidd_write__file}"
+pidd_write () {
+    pidd_write__file="${1}"
+    pidd_write__text="${2}"
+    if [ -n "${pidd_write__file}" ] ; then
+        [ -f "${pidd_write__file}" ] && pidd_cat "${pidd_write__file}"
+        echo "→ ${pidd_write__file}"
+        printf "%s" "${pidd_write__text}" > "${pidd_write__file}" || exit
+        pidd_cat "${pidd_write__file}"
     fi
 }
 
 # constants
 
-CIDD_BOX_DOWN="╭"
-CIDD_BOX_LEFT="╴"
-CIDD_BOX_RIGHT="╶"
-CIDD_BOX_UP="╰"
-CIDD_BOX_VERTICAL="│"
+PIDD_BOX_DOWN="╭"
+PIDD_BOX_LEFT="╴"
+PIDD_BOX_RIGHT="╶"
+PIDD_BOX_UP="╰"
+PIDD_BOX_VERTICAL="│"
 
-CIDD_ERROR_CI=2
-CIDD_ERROR_OS=1
+PIDD_ERROR_CI=2
+PIDD_ERROR_OS=1
 
-CIDD_OS_ALMA="alma"
-CIDD_OS_ALPINE="alpine"
-CIDD_OS_ARCH="arch"
-CIDD_OS_DEBIAN="debian"
-CIDD_OS_FEDORA="fedora"
-CIDD_OS_ROCKY="rocky"
-CIDD_OS_UBUNTU="ubuntu"
+PIDD_OS_ALMA="alma"
+PIDD_OS_ALPINE="alpine"
+PIDD_OS_ARCH="arch"
+PIDD_OS_DEBIAN="debian"
+PIDD_OS_FEDORA="fedora"
+PIDD_OS_ROCKY="rocky"
+PIDD_OS_UBUNTU="ubuntu"
 
-CIDD_PM_APK="apk"
-CIDD_PM_APT="apt"
-CIDD_PM_DNF="dnf"
-CIDD_PM_PACMAN="pacman"
+PIDD_PM_APK="apk"
+PIDD_PM_APT="apt"
+PIDD_PM_DNF="dnf"
+PIDD_PM_PACMAN="pacman"
 
-CIDD_HORIZONTAL="────╌╌╌╌┄┄┄┄┈┈┈┈"
+PIDD_HORIZONTAL="────╌╌╌╌┄┄┄┄┈┈┈┈"
 
-CIDD_OPEN="${CIDD_BOX_DOWN}${CIDD_BOX_LEFT}"
-CIDD_DOWN="${CIDD_BOX_DOWN}${CIDD_HORIZONTAL}"
-CIDD_VERT="${CIDD_BOX_VERTICAL}"
-CIDD_SPLT="${CIDD_BOX_RIGHT}${CIDD_HORIZONTAL}"
-CIDD___UP="${CIDD_BOX_UP}${CIDD_HORIZONTAL}"
-CIDD_SHUT="${CIDD_BOX_UP}${CIDD_BOX_LEFT}"
+PIDD_OPEN="${PIDD_BOX_DOWN}${PIDD_BOX_LEFT}"
+PIDD_DOWN="${PIDD_BOX_DOWN}${PIDD_HORIZONTAL}"
+PIDD_VERT="${PIDD_BOX_VERTICAL}"
+PIDD_SPLT="${PIDD_BOX_RIGHT}${PIDD_HORIZONTAL}"
+PIDD___UP="${PIDD_BOX_UP}${PIDD_HORIZONTAL}"
+PIDD_SHUT="${PIDD_BOX_UP}${PIDD_BOX_LEFT}"
 
 # run
-cidd_main "${@}"
+pidd_main "${@}"
diff --git a/pidd/__init__.py b/pidd/__init__.py
index b735c80..7ddf07f 100644
--- a/pidd/__init__.py
+++ b/pidd/__init__.py
@@ -10,21 +10,21 @@ import env
 from rwx import fs, ps
 from rwx.log import stream as log
 
-import cidd
-from cidd.project import Project
-from cidd.projects import Projects
+import pidd
+from pidd.project import Project
+from pidd.projects import Projects
 
-COMMANDS_PREFIX = "cidd-"
+COMMANDS_PREFIX = "pidd-"
 
 projects = Projects()
 project = Project(projects)
 
 
-def cidd_browse_workspace() -> None:
+def pidd_browse_workspace() -> None:
     browse(project.root)
 
 
-def cidd_build_project() -> None:
+def pidd_build_project() -> None:
     for extension in ["py", "sh"]:
         path = Path(project.root) / f"build.{extension}"
         if path.exists():
@@ -34,7 +34,7 @@ def cidd_build_project() -> None:
         pass
 
 
-def cidd_clone_branch() -> None:
+def pidd_clone_branch() -> None:
     log.info(projects)
     split()
     log.info(project)
@@ -58,12 +58,12 @@ def cidd_clone_branch() -> None:
     )
 
 
-def cidd_list_environment() -> None:
+def pidd_list_environment() -> None:
     for variable, value in sorted(projects.environment.items()):
         log.info(f"{variable} = {value}")
 
 
-def cidd_synchronize() -> None:
+def pidd_synchronize() -> None:
     host = "rwx.work"
     source = "out"
     user = "cd"
@@ -119,10 +119,10 @@ def main() -> None:
     path, *arguments = sys.argv
     name = Path(path).name
     if name == "__main__.py":
-        cidd.set_ssh(*arguments)
-        cidd.install_commands(__file__)
+        pidd.set_ssh(*arguments)
+        pidd.install_commands(__file__)
     else:
-        function = getattr(cidd, name.replace("-", "_"))
+        function = getattr(pidd, name.replace("-", "_"))
         function(*arguments)
 
 
@@ -154,19 +154,19 @@ def set_ssh(*arguments: str) -> None:
 
 
 def frame(text: str) -> None:
-    log.info(f"{env.CIDD_OPEN}{text}")
+    log.info(f"{env.PIDD_OPEN}{text}")
 
 
 def shut(text: str) -> None:
-    log.info(f"{env.CIDD_SHUT}{text}")
+    log.info(f"{env.PIDD_SHUT}{text}")
 
 
 def split() -> None:
-    log.info(env.CIDD_SPLT)
+    log.info(env.PIDD_SPLT)
 
 
 def step(text: str) -> None:
-    env.CIDD_STEP += 1
-    log.info(env.CIDD_DOWN)
-    log.info(f"{env.CIDD_VERT} {env.CIDD_STEP} {text}")
-    log.info(env.CIDD___UP)
+    env.PIDD_STEP += 1
+    log.info(env.PIDD_DOWN)
+    log.info(f"{env.PIDD_VERT} {env.PIDD_STEP} {text}")
+    log.info(env.PIDD___UP)
diff --git a/pidd/__main__.py b/pidd/__main__.py
index 2d29cea..db32c33 100755
--- a/pidd/__main__.py
+++ b/pidd/__main__.py
@@ -2,7 +2,7 @@
 
 """Entry point."""
 
-import cidd
+import pidd
 
 if __name__ == "__main__":
-    cidd.main(__file__)
+    pidd.main(__file__)
diff --git a/pidd/project.py b/pidd/project.py
index 787c97c..2bff2d8 100644
--- a/pidd/project.py
+++ b/pidd/project.py
@@ -7,7 +7,7 @@ from typing import TYPE_CHECKING
 from urllib.parse import urljoin
 
 if TYPE_CHECKING:
-    from cidd.projects import Projects
+    from pidd.projects import Projects
 
 BRANCH = [
     "GITHUB_REF_NAME",
diff --git a/pyproject.toml b/pyproject.toml
index 994bfc7..8b9edb0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ description = "Continuous Integration, Delivery & Deployment"
 dynamic = ["version"]
 keywords = []
 license-files = { paths = ["license.md"] }
-name = "cidd"
+name = "pidd"
 readme = "readme.md"
 requires-python = ">= 3.10"
 
@@ -29,7 +29,7 @@ requires-python = ">= 3.10"
 [project.urls]
 
 [tool.hatch.version]
-path = "cidd/__init__.py"
+path = "pidd/__init__.py"
 
 [tool.ruff]
 line-length = 80
diff --git a/readme.md b/readme.md
index d4d6730..69fb1b5 100644
--- a/readme.md
+++ b/readme.md
@@ -41,19 +41,19 @@ from various contexts of CA, CI and OCI / OS.
 
 | Variable        | Description             | Default                         |
 |:----------------|:------------------------|:--------------------------------|
-| CIDD_CA_n       | Numbered CA certificate |                                 |
-| CIDD_DNS        | Space separated servers | 9.9.9.9                         |
-| CIDD_GIT_CHILD  | Child Git repository    | cidd                            |
-| CIDD_GIT_PARENT | Parent Git repository   | rwx                             |
-| CIDD_SSH_HOSTS  | domain.tld ssh-type pub |                                 |
-| CIDD_SSH_KEY    | SSH private key         |                                 |
-| CIDD_URL_ALMA   | Alma repository URL     | https://repo.almalinux.org      |
-| CIDD_URL_ALPINE | Alpine repository URL   | https://dl-cdn.alpinelinux.org  |
-| CIDD_URL_ARCH   | Arch repository URL     | https://geo.mirror.pkgbuild.com |
-| CIDD_URL_DEBIAN | Debian repository URL   | https://deb.debian.org          |
-| CIDD_URL_FEDORA | Fedora repository URL   | https://rpmfind.net             |
-| CIDD_URL_ROCKY  | Rocky repository URL    | https://dl.rockylinux.org       |
-| CIDD_URL_UBUNTU | Ubuntu repository URL   | https://ubuntu.mirrors.ovh.net  |
+| PIDD_CA_n       | Numbered CA certificate |                                 |
+| PIDD_DNS        | Space separated servers | 9.9.9.9                         |
+| PIDD_GIT_CHILD  | Child Git repository    | pidd                            |
+| PIDD_GIT_PARENT | Parent Git repository   | rwx                             |
+| PIDD_SSH_HOSTS  | domain.tld ssh-type pub |                                 |
+| PIDD_SSH_KEY    | SSH private key         |                                 |
+| PIDD_URL_ALMA   | Alma repository URL     | https://repo.almalinux.org      |
+| PIDD_URL_ALPINE | Alpine repository URL   | https://dl-cdn.alpinelinux.org  |
+| PIDD_URL_ARCH   | Arch repository URL     | https://geo.mirror.pkgbuild.com |
+| PIDD_URL_DEBIAN | Debian repository URL   | https://deb.debian.org          |
+| PIDD_URL_FEDORA | Fedora repository URL   | https://rpmfind.net             |
+| PIDD_URL_ROCKY  | Rocky repository URL    | https://dl.rockylinux.org       |
+| PIDD_URL_UBUNTU | Ubuntu repository URL   | https://ubuntu.mirrors.ovh.net  |
 
 ## HTTPS & Python