diff --git a/spcd.sh b/spcd.sh
index 0796472..efd89db 100644
--- a/spcd.sh
+++ b/spcd.sh
@@ -1,196 +1,196 @@
 #! /usr/bin/env sh
 
 # defaults
-[ -n "${PIDD_DNS}" ] || PIDD_DNS="\
+[ -n "${SPCD_DNS}" ] || SPCD_DNS="\
 9.9.9.9 \
 "
-[ -n "${PIDD_GIT_MAIN}" ] || PIDD_GIT_MAIN="pidd"
-[ -n "${PIDD_GIT_ROOT}" ] || PIDD_GIT_ROOT="rwx"
+[ -n "${SPCD_GIT_MAIN}" ] || SPCD_GIT_MAIN="spcd"
+[ -n "${SPCD_GIT_ROOT}" ] || SPCD_GIT_ROOT="rwx"
 
 # main
-pidd_main() {
-	pidd_list_environment_variables
-	pidd_list_working_directory
+spcd_main() {
+	spcd_list_environment_variables
+	spcd_list_working_directory
 	#
-	pidd_set_environment_variables
-	pidd_set_packages_repositories
-	pidd_set_packages_configuration
+	spcd_set_environment_variables
+	spcd_set_packages_repositories
+	spcd_set_packages_configuration
 	#
-	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
+	spcd_set_https_verification_off
+	spcd_set_dns_resolving
+	spcd_update_packages_catalog
+	spcd_install_packages_tools
+	spcd_install_ca_certificates
+	spcd_write_ca_certificates
+	spcd_update_ca_certificates
+	spcd_set_https_verification_on
+	spcd_update_packages_catalog
+	spcd_upgrade_packages
+	spcd_install_git
+	spcd_install_python
 	# TODO move to Python
-	pidd_install_rsync
+	spcd_install_rsync
 	# TODO move to Python
-	pidd_install_ssh
-	pidd_clean_packages_cache
-	pidd_install_python_modules
-	pidd_write_python_module
-	pidd_switch_to_python "${@}"
+	spcd_install_ssh
+	spcd_clean_packages_cache
+	spcd_install_python_modules
+	spcd_write_python_module
+	spcd_switch_to_python "${@}"
 }
 
 # context
 
-pidd_list_environment_variables() {
-	pidd_step "List environment variables"
-	for pidd_lev__name in $(printenv | cut -d = -f 1 | sort); do
-		pidd_lev__text=""
-		eval "pidd_lev__text=\"\${${pidd_lev__name}}\""
-		echo "${pidd_lev__name}=${pidd_lev__text}"
+spcd_list_environment_variables() {
+	spcd_step "List environment variables"
+	for spcd_lev__name in $(printenv | cut -d = -f 1 | sort); do
+		spcd_lev__text=""
+		eval "spcd_lev__text=\"\${${spcd_lev__name}}\""
+		echo "${spcd_lev__name}=${spcd_lev__text}"
 	done
 }
 
-pidd_list_working_directory() {
-	pidd_step "List working directory"
-	pidd_lwd__path="$(realpath .)"
-	pidd_ls "${pidd_lwd__path}"
+spcd_list_working_directory() {
+	spcd_step "List working directory"
+	spcd_lwd__path="$(realpath .)"
+	spcd_ls "${spcd_lwd__path}"
 }
 
 # steps
 
-pidd_set_environment_variables() {
-	pidd_step "Set environment variables"
+spcd_set_environment_variables() {
+	spcd_step "Set environment variables"
 	# set path
-	PIDD_PATH="$(realpath "${0}")"
-	pidd_echo "PIDD_PATH"
+	SPCD_PATH="$(realpath "${0}")"
+	spcd_echo "SPCD_PATH"
 	# set operating system 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="${PIDD_OS_UBUNTU}" ;;
-	*) pidd_error_os "PIDD_OS_ID" ;;
+	SPCD_OS_ID="$(spcd_grep_os ID)"
+	case "${SPCD_OS_ID}" in
+	"almalinux") SPCD_OS_ID="${SPCD_OS_ALMA}" ;;
+	"alpine") SPCD_OS_ID="${SPCD_OS_ALPINE}" ;;
+	"arch") SPCD_OS_ID="${SPCD_OS_ARCH}" ;;
+	"debian") SPCD_OS_ID="${SPCD_OS_DEBIAN}" ;;
+	"fedora") SPCD_OS_ID="${SPCD_OS_FEDORA}" ;;
+	"rocky") SPCD_OS_ID="${SPCD_OS_ROCKY}" ;;
+	"ubuntu") SPCD_OS_ID="${SPCD_OS_UBUNTU}" ;;
+	*) spcd_error_os "SPCD_OS_ID" ;;
 	esac
 	# set operating system version
-	case "${PIDD_OS_ID}" in
-	"${PIDD_OS_ALMA}" | "${PIDD_OS_FEDORA}" | "${PIDD_OS_ROCKY}" | \
-		"${PIDD_OS_ARCH}")
-		PIDD_OS_VERSION=$(pidd_grep_os VERSION_ID |
+	case "${SPCD_OS_ID}" in
+	"${SPCD_OS_ALMA}" | "${SPCD_OS_FEDORA}" | "${SPCD_OS_ROCKY}" | \
+		"${SPCD_OS_ARCH}")
+		SPCD_OS_VERSION=$(spcd_grep_os VERSION_ID |
 			sed "s|^\([0-9]\+\)\..*|\1|")
 		;;
-	"${PIDD_OS_ALPINE}")
-		PIDD_OS_VERSION=$(pidd_grep_os VERSION_ID |
+	"${SPCD_OS_ALPINE}")
+		SPCD_OS_VERSION=$(spcd_grep_os VERSION_ID |
 			sed "s|^\([0-9]\+\.[0-9]\+\)\..*|\1|")
 		;;
-	"${PIDD_OS_DEBIAN}" | "${PIDD_OS_UBUNTU}")
-		PIDD_OS_VERSION="$(pidd_grep_os VERSION_CODENAME)"
+	"${SPCD_OS_DEBIAN}" | "${SPCD_OS_UBUNTU}")
+		SPCD_OS_VERSION="$(spcd_grep_os VERSION_CODENAME)"
 		;;
 	*) ;;
 	esac
 	# check operating system version
-	case "${PIDD_OS_ID}" in
-	"${PIDD_OS_ALMA}" | "${PIDD_OS_ROCKY}")
-		case "${PIDD_OS_VERSION}" in
+	case "${SPCD_OS_ID}" in
+	"${SPCD_OS_ALMA}" | "${SPCD_OS_ROCKY}")
+		case "${SPCD_OS_VERSION}" in
 		"8" | "9") ;;
-		*) pidd_error_os "PIDD_OS_VERSION" ;;
+		*) spcd_error_os "SPCD_OS_VERSION" ;;
 		esac
 		;;
-	"${PIDD_OS_ALPINE}")
-		case "${PIDD_OS_VERSION}" in
+	"${SPCD_OS_ALPINE}")
+		case "${SPCD_OS_VERSION}" in
 		"3.18" | "3.19") ;;
-		*) pidd_error_os "PIDD_OS_VERSION" ;;
+		*) spcd_error_os "SPCD_OS_VERSION" ;;
 		esac
 		;;
-	"${PIDD_OS_ARCH}")
-		case "${PIDD_OS_VERSION}" in
+	"${SPCD_OS_ARCH}")
+		case "${SPCD_OS_VERSION}" in
 		"20231112" | "20240101") ;;
-		*) pidd_error_os "PIDD_OS_VERSION" ;;
+		*) spcd_error_os "SPCD_OS_VERSION" ;;
 		esac
 		;;
-	"${PIDD_OS_DEBIAN}")
-		case "${PIDD_OS_VERSION}" in
+	"${SPCD_OS_DEBIAN}")
+		case "${SPCD_OS_VERSION}" in
 		"bookworm" | "bullseye") ;;
-		*) pidd_error_os "PIDD_OS_VERSION" ;;
+		*) spcd_error_os "SPCD_OS_VERSION" ;;
 		esac
 		;;
-	"${PIDD_OS_FEDORA}")
-		case "${PIDD_OS_VERSION}" in
+	"${SPCD_OS_FEDORA}")
+		case "${SPCD_OS_VERSION}" in
 		"39" | "40") ;;
-		*) pidd_error_os "PIDD_OS_VERSION" ;;
+		*) spcd_error_os "SPCD_OS_VERSION" ;;
 		esac
 		;;
-	"${PIDD_OS_UBUNTU}")
-		case "${PIDD_OS_VERSION}" in
+	"${SPCD_OS_UBUNTU}")
+		case "${SPCD_OS_VERSION}" in
 		"jammy" | "noble") ;;
-		*) pidd_error_os "PIDD_OS_VERSION" ;;
+		*) spcd_error_os "SPCD_OS_VERSION" ;;
 		esac
 		;;
 	*) ;;
 	esac
-	pidd_split
-	pidd_echo "PIDD_OS_ID" "PIDD_OS_VERSION"
+	spcd_split
+	spcd_echo "SPCD_OS_ID" "SPCD_OS_VERSION"
 	# universal
-	PIDD_DNS_FILE="/etc/resolv.conf"
-	PIDD_PKG_CA="ca-certificates"
-	PIDD_PKG_GIT="git"
+	SPCD_DNS_FILE="/etc/resolv.conf"
+	SPCD_PKG_CA="ca-certificates"
+	SPCD_PKG_GIT="git"
 	# TODO move to Python
-	PIDD_PKG_RSYNC="rsync"
-	PIDD_PYTHON_ALIAS="python3"
-	pidd_split
-	pidd_echo "PIDD_DNS_FILE" "PIDD_PKG_CA" "PIDD_PKG_GIT" "PIDD_PYTHON_ALIAS"
+	SPCD_PKG_RSYNC="rsync"
+	SPCD_PYTHON_ALIAS="python3"
+	spcd_split
+	spcd_echo "SPCD_DNS_FILE" "SPCD_PKG_CA" "SPCD_PKG_GIT" "SPCD_PYTHON_ALIAS"
 	# set ca command & root
-	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"
+	case "${SPCD_OS_ID}" in
+	"${SPCD_OS_ALMA}" | "${SPCD_OS_FEDORA}" | "${SPCD_OS_ROCKY}")
+		SPCD_CA_ROOT="/etc/pki/ca-trust/source/anchors"
+		SPCD_CMD_CA="update-ca-trust"
 		;;
-	"${PIDD_OS_ALPINE}")
-		PIDD_CA_ROOT="/usr/local/share/ca-certificates"
-		PIDD_CMD_CA="update-ca-certificates"
+	"${SPCD_OS_ALPINE}")
+		SPCD_CA_ROOT="/usr/local/share/ca-certificates"
+		SPCD_CMD_CA="update-ca-certificates"
 		;;
-	"${PIDD_OS_ARCH}")
-		PIDD_CA_ROOT="/etc/ca-certificates/trust-source/anchors"
-		PIDD_CMD_CA="update-ca-trust"
+	"${SPCD_OS_ARCH}")
+		SPCD_CA_ROOT="/etc/ca-certificates/trust-source/anchors"
+		SPCD_CMD_CA="update-ca-trust"
 		;;
-	"${PIDD_OS_DEBIAN}" | "${PIDD_OS_UBUNTU}")
-		PIDD_CA_ROOT="/usr/local/share/ca-certificates"
-		PIDD_CMD_CA="update-ca-certificates"
+	"${SPCD_OS_DEBIAN}" | "${SPCD_OS_UBUNTU}")
+		SPCD_CA_ROOT="/usr/local/share/ca-certificates"
+		SPCD_CMD_CA="update-ca-certificates"
 		;;
 	*) ;;
 	esac
-	pidd_split
-	pidd_echo "PIDD_CA_ROOT" "PIDD_CMD_CA"
+	spcd_split
+	spcd_echo "SPCD_CA_ROOT" "SPCD_CMD_CA"
 	# set package manager
-	case "${PIDD_OS_ID}" in
-	"${PIDD_OS_ALPINE}")
-		PIDD_PM="${PIDD_PM_APK}"
+	case "${SPCD_OS_ID}" in
+	"${SPCD_OS_ALPINE}")
+		SPCD_PM="${SPCD_PM_APK}"
 		;;
-	"${PIDD_OS_DEBIAN}" | "${PIDD_OS_UBUNTU}")
-		PIDD_PM="${PIDD_PM_APT}"
+	"${SPCD_OS_DEBIAN}" | "${SPCD_OS_UBUNTU}")
+		SPCD_PM="${SPCD_PM_APT}"
 		;;
-	"${PIDD_OS_ALMA}" | "${PIDD_OS_FEDORA}" | "${PIDD_OS_ROCKY}")
-		PIDD_PM="${PIDD_PM_DNF}"
+	"${SPCD_OS_ALMA}" | "${SPCD_OS_FEDORA}" | "${SPCD_OS_ROCKY}")
+		SPCD_PM="${SPCD_PM_DNF}"
 		;;
-	"${PIDD_OS_ARCH}")
-		PIDD_PM="${PIDD_PM_PACMAN}"
+	"${SPCD_OS_ARCH}")
+		SPCD_PM="${SPCD_PM_PACMAN}"
 		;;
 	*) ;;
 	esac
-	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="\
+	spcd_split
+	spcd_echo "SPCD_PM"
+	case "${SPCD_PM}" in
+	"${SPCD_PM_DNF}")
+		SPCD_PM_CLEAN="dnf clean all"
+		SPCD_PM_INSTALL="dnf install --assumeyes"
+		SPCD_PM_QUERY="rpm --query"
+		SPCD_PM_UPDATE="dnf makecache"
+		SPCD_PM_UPGRADE="dnf upgrade --assumeyes"
+		SPCD_PKG_PKG=""
+		SPCD_PM_CONF_PATH="/etc/dnf/dnf.conf"
+		SPCD_PM_CONF_TEXT="\
 [main]
 best=True
 clean_requirements_on_remove=True
@@ -198,196 +198,196 @@ gpgcheck=1
 installonly_limit=3
 skip_if_unavailable=False
 "
-		PIDD_PM_HTTPS_PATH="/etc/dnf/dnf.conf.d/https.conf"
-		PIDD_PM_HTTPS_TEXT="\
+		SPCD_PM_HTTPS_PATH="/etc/dnf/dnf.conf.d/https.conf"
+		SPCD_PM_HTTPS_TEXT="\
 sslverify=False
 "
 		;;
-	"${PIDD_PM_APK}")
-		PIDD_PM_CLEAN="apk cache purge"
-		PIDD_PM_INSTALL="apk add"
-		PIDD_PM_QUERY="apk info"
-		PIDD_PM_UPDATE="apk update"
-		PIDD_PM_UPGRADE="apk upgrade"
-		PIDD_PKG_PKG=""
-		PIDD_PM_CONF_PATH=""
-		PIDD_PM_CONF_TEXT=""
-		PIDD_PM_HTTPS_PATH="/etc/apk/repositories.d/https"
-		PIDD_PM_HTTPS_TEXT="\
+	"${SPCD_PM_APK}")
+		SPCD_PM_CLEAN="apk cache purge"
+		SPCD_PM_INSTALL="apk add"
+		SPCD_PM_QUERY="apk info"
+		SPCD_PM_UPDATE="apk update"
+		SPCD_PM_UPGRADE="apk upgrade"
+		SPCD_PKG_PKG=""
+		SPCD_PM_CONF_PATH=""
+		SPCD_PM_CONF_TEXT=""
+		SPCD_PM_HTTPS_PATH="/etc/apk/repositories.d/https"
+		SPCD_PM_HTTPS_TEXT="\
 --no-verify
 "
 		;;
-	"${PIDD_PM_PACMAN}")
-		PIDD_PM_CLEAN="pacman --sync --clean --noconfirm"
-		PIDD_PM_INSTALL="pacman --sync --noconfirm"
-		PIDD_PM_QUERY="pacman --query"
-		PIDD_PM_UPDATE="pacman --sync --refresh"
-		PIDD_PM_UPGRADE="pacman --sync --sysupgrade --noconfirm"
-		PIDD_PKG_PKG=""
-		PIDD_PM_CONF_PATH=""
-		PIDD_PM_CONF_TEXT=""
-		PIDD_PM_HTTPS_PATH="/etc/pacman.d/https.conf"
-		PIDD_PM_HTTPS_TEXT="\
+	"${SPCD_PM_PACMAN}")
+		SPCD_PM_CLEAN="pacman --sync --clean --noconfirm"
+		SPCD_PM_INSTALL="pacman --sync --noconfirm"
+		SPCD_PM_QUERY="pacman --query"
+		SPCD_PM_UPDATE="pacman --sync --refresh"
+		SPCD_PM_UPGRADE="pacman --sync --sysupgrade --noconfirm"
+		SPCD_PKG_PKG=""
+		SPCD_PM_CONF_PATH=""
+		SPCD_PM_CONF_TEXT=""
+		SPCD_PM_HTTPS_PATH="/etc/pacman.d/https.conf"
+		SPCD_PM_HTTPS_TEXT="\
 SSLVerify = No
 "
 		;;
-	"${PIDD_PM_APT}")
-		PIDD_PM_CLEAN="apt-get clean"
-		PIDD_PM_INSTALL="apt-get install --assume-yes"
-		PIDD_PM_QUERY="dpkg-query --show"
-		PIDD_PM_UPDATE="apt-get update"
-		PIDD_PM_UPGRADE="apt-get upgrade --assume-yes"
-		PIDD_PKG_PKG="apt-utils"
-		PIDD_PM_CONF_PATH="/etc/apt/apt.conf.d/apt.conf"
-		PIDD_PM_CONF_TEXT="\
+	"${SPCD_PM_APT}")
+		SPCD_PM_CLEAN="apt-get clean"
+		SPCD_PM_INSTALL="apt-get install --assume-yes"
+		SPCD_PM_QUERY="dpkg-query --show"
+		SPCD_PM_UPDATE="apt-get update"
+		SPCD_PM_UPGRADE="apt-get upgrade --assume-yes"
+		SPCD_PKG_PKG="apt-utils"
+		SPCD_PM_CONF_PATH="/etc/apt/apt.conf.d/apt.conf"
+		SPCD_PM_CONF_TEXT="\
 Acquire::Check-Valid-Until True;
 APT::Get::Show-Versions True;
 APT::Install-Recommends False;
 APT::Install-Suggests False;
 Dir::Etc::SourceParts \"\";
 "
-		PIDD_PM_HTTPS_PATH="/etc/apt/apt.conf.d/https"
-		PIDD_PM_HTTPS_TEXT="\
+		SPCD_PM_HTTPS_PATH="/etc/apt/apt.conf.d/https"
+		SPCD_PM_HTTPS_TEXT="\
 Acquire::https::Verify-Peer False;
 "
 		;;
 	*) ;;
 	esac
-	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"
+	spcd_split
+	spcd_echo "SPCD_PM_CLEAN" \
+		"SPCD_PM_INSTALL" "SPCD_PM_QUERY" "SPCD_PM_UPDATE" "SPCD_PM_UPGRADE"
+	spcd_split
+	spcd_echo "SPCD_PKG_PKG" "SPCD_PM_CONF_PATH" "SPCD_PM_HTTPS_PATH"
 	# specific
-	case "${PIDD_OS_ID}" in
-	"${PIDD_OS_ALMA}")
-		PIDD_URL_DEFAULT="https://repo.almalinux.org/almalinux"
+	case "${SPCD_OS_ID}" in
+	"${SPCD_OS_ALMA}")
+		SPCD_URL_DEFAULT="https://repo.almalinux.org/almalinux"
 		;;
-	"${PIDD_OS_ALPINE}")
-		PIDD_URL_DEFAULT="https://dl-cdn.alpinelinux.org/alpine"
+	"${SPCD_OS_ALPINE}")
+		SPCD_URL_DEFAULT="https://dl-cdn.alpinelinux.org/alpine"
 		;;
-	"${PIDD_OS_ARCH}")
-		PIDD_URL_DEFAULT="https://geo.mirror.pkgbuild.com"
+	"${SPCD_OS_ARCH}")
+		SPCD_URL_DEFAULT="https://geo.mirror.pkgbuild.com"
 		;;
-	"${PIDD_OS_DEBIAN}")
-		PIDD_URL_DEFAULT="http://deb.debian.org/debian"
+	"${SPCD_OS_DEBIAN}")
+		SPCD_URL_DEFAULT="http://deb.debian.org/debian"
 		;;
-	"${PIDD_OS_FEDORA}")
-		PIDD_URL_DEFAULT="http://download.example/pub/fedora/linux/releases"
+	"${SPCD_OS_FEDORA}")
+		SPCD_URL_DEFAULT="http://download.example/pub/fedora/linux/releases"
 		;;
-	"${PIDD_OS_ROCKY}")
-		PIDD_URL_DEFAULT="http://dl.rockylinux.org/\$contentdir"
+	"${SPCD_OS_ROCKY}")
+		SPCD_URL_DEFAULT="http://dl.rockylinux.org/\$contentdir"
 		;;
-	"${PIDD_OS_UBUNTU}")
-		PIDD_URL_DEFAULT="http://archive.ubuntu.com/ubuntu"
+	"${SPCD_OS_UBUNTU}")
+		SPCD_URL_DEFAULT="http://archive.ubuntu.com/ubuntu"
 		;;
 	*) ;;
 	esac
-	PIDD_URL_CHOSEN="${PIDD_URL_DEFAULT}"
-	case "${PIDD_OS_ID}" in
-	"${PIDD_OS_ALMA}")
-		[ -n "${PIDD_URL_ALMA}" ] && PIDD_URL_CHOSEN="${PIDD_URL_ALMA}"
+	SPCD_URL_CHOSEN="${SPCD_URL_DEFAULT}"
+	case "${SPCD_OS_ID}" in
+	"${SPCD_OS_ALMA}")
+		[ -n "${SPCD_URL_ALMA}" ] && SPCD_URL_CHOSEN="${SPCD_URL_ALMA}"
 		;;
-	"${PIDD_OS_ALPINE}")
-		[ -n "${PIDD_URL_ALPINE}" ] && PIDD_URL_CHOSEN="${PIDD_URL_ALPINE}"
+	"${SPCD_OS_ALPINE}")
+		[ -n "${SPCD_URL_ALPINE}" ] && SPCD_URL_CHOSEN="${SPCD_URL_ALPINE}"
 		;;
-	"${PIDD_OS_ARCH}")
-		[ -n "${PIDD_URL_ARCH}" ] && PIDD_URL_CHOSEN="${PIDD_URL_ARCH}"
+	"${SPCD_OS_ARCH}")
+		[ -n "${SPCD_URL_ARCH}" ] && SPCD_URL_CHOSEN="${SPCD_URL_ARCH}"
 		;;
-	"${PIDD_OS_DEBIAN}")
-		[ -n "${PIDD_URL_DEBIAN}" ] && PIDD_URL_CHOSEN="${PIDD_URL_DEBIAN}" ||
-			PIDD_URL_CHOSEN="https://deb.debian.org/debian"
+	"${SPCD_OS_DEBIAN}")
+		[ -n "${SPCD_URL_DEBIAN}" ] && SPCD_URL_CHOSEN="${SPCD_URL_DEBIAN}" ||
+			SPCD_URL_CHOSEN="https://deb.debian.org/debian"
 		;;
-	"${PIDD_OS_FEDORA}")
-		[ -n "${PIDD_URL_FEDORA}" ] && PIDD_URL_CHOSEN="${PIDD_URL_FEDORA}" ||
-			PIDD_URL_CHOSEN="https://rpmfind.net/linux/fedora/linux/releases"
+	"${SPCD_OS_FEDORA}")
+		[ -n "${SPCD_URL_FEDORA}" ] && SPCD_URL_CHOSEN="${SPCD_URL_FEDORA}" ||
+			SPCD_URL_CHOSEN="https://rpmfind.net/linux/fedora/linux/releases"
 		;;
-	"${PIDD_OS_ROCKY}")
-		[ -n "${PIDD_URL_ROCKY}" ] && PIDD_URL_CHOSEN="${PIDD_URL_ROCKY}" ||
-			PIDD_URL_CHOSEN="https://dl.rockylinux.org/\$contentdir"
+	"${SPCD_OS_ROCKY}")
+		[ -n "${SPCD_URL_ROCKY}" ] && SPCD_URL_CHOSEN="${SPCD_URL_ROCKY}" ||
+			SPCD_URL_CHOSEN="https://dl.rockylinux.org/\$contentdir"
 		;;
-	"${PIDD_OS_UBUNTU}")
-		[ -n "${PIDD_URL_UBUNTU}" ] && PIDD_URL_CHOSEN="${PIDD_URL_UBUNTU}" ||
-			PIDD_URL_CHOSEN="https://ubuntu.mirrors.ovh.net/ubuntu"
+	"${SPCD_OS_UBUNTU}")
+		[ -n "${SPCD_URL_UBUNTU}" ] && SPCD_URL_CHOSEN="${SPCD_URL_UBUNTU}" ||
+			SPCD_URL_CHOSEN="https://ubuntu.mirrors.ovh.net/ubuntu"
 		;;
 	*) ;;
 	esac
-	pidd_split
-	pidd_echo "PIDD_URL_DEFAULT" "PIDD_URL_CHOSEN"
+	spcd_split
+	spcd_echo "SPCD_URL_DEFAULT" "SPCD_URL_CHOSEN"
 	# set python command & package
-	case "${PIDD_OS_ID}" in
-	"${PIDD_OS_ALMA}" | "${PIDD_OS_ROCKY}")
-		PIDD_PYTHON_COMMAND="python3.11"
-		PIDD_PYTHON_PACKAGE="python3.11"
+	case "${SPCD_OS_ID}" in
+	"${SPCD_OS_ALMA}" | "${SPCD_OS_ROCKY}")
+		SPCD_PYTHON_COMMAND="python3.11"
+		SPCD_PYTHON_PACKAGE="python3.11"
 		;;
-	"${PIDD_OS_ALPINE}")
-		PIDD_PYTHON_COMMAND="python3.11"
-		PIDD_PYTHON_PACKAGE="python3"
+	"${SPCD_OS_ALPINE}")
+		SPCD_PYTHON_COMMAND="python3.11"
+		SPCD_PYTHON_PACKAGE="python3"
 		;;
-	"${PIDD_OS_ARCH}")
-		PIDD_PYTHON_COMMAND="python3.12"
-		PIDD_PYTHON_PACKAGE="python"
+	"${SPCD_OS_ARCH}")
+		SPCD_PYTHON_COMMAND="python3.12"
+		SPCD_PYTHON_PACKAGE="python"
 		;;
-	"${PIDD_OS_DEBIAN}")
-		case "${PIDD_OS_VERSION}" in
-		"bookworm") PIDD_PYTHON_COMMAND="python3.11" ;;
-		"bullseye") PIDD_PYTHON_COMMAND="python3.9" ;;
+	"${SPCD_OS_DEBIAN}")
+		case "${SPCD_OS_VERSION}" in
+		"bookworm") SPCD_PYTHON_COMMAND="python3.11" ;;
+		"bullseye") SPCD_PYTHON_COMMAND="python3.9" ;;
 		*) ;;
 		esac
-		PIDD_PYTHON_PACKAGE="python3"
+		SPCD_PYTHON_PACKAGE="python3"
 		;;
-	"${PIDD_OS_FEDORA}")
-		PIDD_PYTHON_COMMAND="python3.12"
-		PIDD_PYTHON_PACKAGE="python3"
+	"${SPCD_OS_FEDORA}")
+		SPCD_PYTHON_COMMAND="python3.12"
+		SPCD_PYTHON_PACKAGE="python3"
 		;;
-	"${PIDD_OS_UBUNTU}")
-		case "${PIDD_OS_VERSION}" in
-		"noble") PIDD_PYTHON_COMMAND="python3.12" ;;
-		"jammy") PIDD_PYTHON_COMMAND="python3.10" ;;
+	"${SPCD_OS_UBUNTU}")
+		case "${SPCD_OS_VERSION}" in
+		"noble") SPCD_PYTHON_COMMAND="python3.12" ;;
+		"jammy") SPCD_PYTHON_COMMAND="python3.10" ;;
 		*) ;;
 		esac
-		PIDD_PYTHON_PACKAGE="python3"
+		SPCD_PYTHON_PACKAGE="python3"
 		;;
 	*) ;;
 	esac
 	# set python packages
-	case "${PIDD_OS_ID}" in
-	"${PIDD_OS_ALMA}" | "${PIDD_OS_FEDORA}" | "${PIDD_OS_ROCKY}")
-		PIDD_PYTHON_PACKAGES="/usr/lib64/${PIDD_PYTHON_COMMAND}/site-packages"
+	case "${SPCD_OS_ID}" in
+	"${SPCD_OS_ALMA}" | "${SPCD_OS_FEDORA}" | "${SPCD_OS_ROCKY}")
+		SPCD_PYTHON_PACKAGES="/usr/lib64/${SPCD_PYTHON_COMMAND}/site-packages"
 		;;
-	"${PIDD_OS_ALPINE}" | "${PIDD_OS_ARCH}")
-		PIDD_PYTHON_PACKAGES="/usr/lib/${PIDD_PYTHON_COMMAND}/site-packages"
+	"${SPCD_OS_ALPINE}" | "${SPCD_OS_ARCH}")
+		SPCD_PYTHON_PACKAGES="/usr/lib/${SPCD_PYTHON_COMMAND}/site-packages"
 		;;
-	"${PIDD_OS_DEBIAN}" | "${PIDD_OS_UBUNTU}")
-		PIDD_PYTHON_PACKAGES="/usr/lib/${PIDD_PYTHON_ALIAS}/dist-packages"
+	"${SPCD_OS_DEBIAN}" | "${SPCD_OS_UBUNTU}")
+		SPCD_PYTHON_PACKAGES="/usr/lib/${SPCD_PYTHON_ALIAS}/dist-packages"
 		;;
 	*) ;;
 	esac
-	pidd_split
-	pidd_echo "PIDD_PYTHON_COMMAND" "PIDD_PYTHON_PACKAGE" "PIDD_PYTHON_PACKAGES"
+	spcd_split
+	spcd_echo "SPCD_PYTHON_COMMAND" "SPCD_PYTHON_PACKAGE" "SPCD_PYTHON_PACKAGES"
 	# variables
-	[ -n "${PIDD_CA_1}" ] && PIDD_CA=true
+	[ -n "${SPCD_CA_1}" ] && SPCD_CA=true
 	# continuous integration platform
 	if [ -n "${GITHUB_ACTIONS}" ]; then
 		# github → gitea → forgejo
 		if [ -n "${GITHUB_SERVER_URL}" ]; then
-			PIDD_PROJECT_ROOT="$(dirname "${GITHUB_SERVER_URL}")//"
+			SPCD_PROJECT_ROOT="$(dirname "${GITHUB_SERVER_URL}")//"
 			[ -n "${GITHUB_TOKEN}" ] &&
-				PIDD_PROJECT_ROOT="${PIDD_PROJECT_ROOT}${GITHUB_TOKEN}@"
-			PIDD_PROJECT_ROOT="${PIDD_PROJECT_ROOT}$(basename "${GITHUB_SERVER_URL}")"
+				SPCD_PROJECT_ROOT="${SPCD_PROJECT_ROOT}${GITHUB_TOKEN}@"
+			SPCD_PROJECT_ROOT="${SPCD_PROJECT_ROOT}$(basename "${GITHUB_SERVER_URL}")"
 		else
-			pidd_error_ci "GITHUB_SERVER_URL"
+			spcd_error_ci "GITHUB_SERVER_URL"
 		fi
 		if [ -n "${GITHUB_REPOSITORY}" ]; then
-			PIDD_PROJECT_PATH="$(dirname "${GITHUB_REPOSITORY}")"
-			PIDD_PROJECT_NAME="$(basename "${GITHUB_REPOSITORY}")"
+			SPCD_PROJECT_PATH="$(dirname "${GITHUB_REPOSITORY}")"
+			SPCD_PROJECT_NAME="$(basename "${GITHUB_REPOSITORY}")"
 		else
-			pidd_error_ci "GITHUB_REPOSITORY"
+			spcd_error_ci "GITHUB_REPOSITORY"
 		fi
 		if [ -n "${GITHUB_REF_NAME}" ]; then
-			PIDD_PROJECT_BRANCH="${GITHUB_REF_NAME}"
+			SPCD_PROJECT_BRANCH="${GITHUB_REF_NAME}"
 		else
-			pidd_error_ci "GITHUB_REF_NAME"
+			spcd_error_ci "GITHUB_REF_NAME"
 		fi
 	elif [ -n "${GITLAB_CI}" ]; then
 		# gitlab
@@ -395,117 +395,117 @@ Acquire::https::Verify-Peer False;
 			if [ -n "${CI_REGISTRY_USER}" ]; then
 				if [ -n "${CI_REGISTRY_PASSWORD}" ]; then
 					if [ -n "${CI_SERVER_FQDN}" ]; then
-						PIDD_PROJECT_ROOT="${CI_SERVER_PROTOCOL}\
+						SPCD_PROJECT_ROOT="${CI_SERVER_PROTOCOL}\
 ://${CI_REGISTRY_USER}:${CI_REGISTRY_PASSWORD}@${CI_SERVER_FQDN}"
 						if [ -n "${CI_PROJECT_NAMESPACE}" ]; then
-							PIDD_PROJECT_PATH="${CI_PROJECT_NAMESPACE}"
+							SPCD_PROJECT_PATH="${CI_PROJECT_NAMESPACE}"
 							if [ -n "${CI_PROJECT_NAME}" ]; then
-								PIDD_PROJECT_NAME="${CI_PROJECT_NAME}"
+								SPCD_PROJECT_NAME="${CI_PROJECT_NAME}"
 							else
-								pidd_error_ci "CI_PROJECT_NAME"
+								spcd_error_ci "CI_PROJECT_NAME"
 							fi
 						else
-							pidd_error_ci "CI_PROJECT_NAMESPACE"
+							spcd_error_ci "CI_PROJECT_NAMESPACE"
 						fi
 					else
-						pidd_error_ci "CI_SERVER_FQDN"
+						spcd_error_ci "CI_SERVER_FQDN"
 					fi
 				else
-					pidd_error_ci "CI_REGISTRY_PASSWORD"
+					spcd_error_ci "CI_REGISTRY_PASSWORD"
 				fi
 			else
-				pidd_error_ci "CI_REGISTRY_USER"
+				spcd_error_ci "CI_REGISTRY_USER"
 			fi
 		else
-			pidd_error_ci "CI_SERVER_PROTOCOL"
+			spcd_error_ci "CI_SERVER_PROTOCOL"
 		fi
 		if [ -n "${CI_COMMIT_BRANCH}" ]; then
-			PIDD_PROJECT_BRANCH="${CI_COMMIT_BRANCH}"
+			SPCD_PROJECT_BRANCH="${CI_COMMIT_BRANCH}"
 		else
-			pidd_error_ci "CI_COMMIT_BRANCH"
+			spcd_error_ci "CI_COMMIT_BRANCH"
 		fi
 	else
 		# unsupported
-		pidd_error_ci "ø"
+		spcd_error_ci "ø"
 	fi
-	[ -n "${PIDD_PROJECT_ROOT}" ] || pidd_error_ci "PIDD_PROJECT_ROOT"
-	[ -n "${PIDD_PROJECT_PATH}" ] || pidd_error_ci "PIDD_PROJECT_PATH"
-	[ -n "${PIDD_PROJECT_NAME}" ] || pidd_error_ci "PIDD_PROJECT_NAME"
-	[ -n "${PIDD_PROJECT_BRANCH}" ] || pidd_error_ci "PIDD_PROJECT_BRANCH"
+	[ -n "${SPCD_PROJECT_ROOT}" ] || spcd_error_ci "SPCD_PROJECT_ROOT"
+	[ -n "${SPCD_PROJECT_PATH}" ] || spcd_error_ci "SPCD_PROJECT_PATH"
+	[ -n "${SPCD_PROJECT_NAME}" ] || spcd_error_ci "SPCD_PROJECT_NAME"
+	[ -n "${SPCD_PROJECT_BRANCH}" ] || spcd_error_ci "SPCD_PROJECT_BRANCH"
 	#
-	pidd_split
-	pidd_echo "PIDD_CA"
-	pidd_split
-	pidd_echo "PIDD_PROJECT_ROOT" \
-		"PIDD_PROJECT_PATH" "PIDD_PROJECT_NAME" "PIDD_PROJECT_BRANCH"
+	spcd_split
+	spcd_echo "SPCD_CA"
+	spcd_split
+	spcd_echo "SPCD_PROJECT_ROOT" \
+		"SPCD_PROJECT_PATH" "SPCD_PROJECT_NAME" "SPCD_PROJECT_BRANCH"
 	# TODO move to Python
-	case "${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" ;;
+	case "${SPCD_PM}" in
+	"${SPCD_PM_APK}" | "${SPCD_PM_APT}") SPCD_PKG_SSH="openssh-client" ;;
+	"${SPCD_PM_DNF}") SPCD_PKG_SSH="openssh-clients" ;;
+	"${SPCD_PM_PACMAN}") SPCD_PKG_SSH="openssh" ;;
 	*) ;;
 	esac
 }
 
-pidd_set_packages_repositories() {
-	pidd_step "Set packages repositories"
-	case "${PIDD_OS_ID}" in
-	"${PIDD_OS_ALMA}")
-		case "${PIDD_OS_VERSION}" in
-		"8") pidd_spr__file="/etc/yum.repos.d/almalinux.repo" ;;
-		"9") pidd_spr__file="/etc/yum.repos.d/almalinux-baseos.repo" ;;
+spcd_set_packages_repositories() {
+	spcd_step "Set packages repositories"
+	case "${SPCD_OS_ID}" in
+	"${SPCD_OS_ALMA}")
+		case "${SPCD_OS_VERSION}" in
+		"8") spcd_spr__file="/etc/yum.repos.d/almalinux.repo" ;;
+		"9") spcd_spr__file="/etc/yum.repos.d/almalinux-baseos.repo" ;;
 		*) ;;
 		esac
-		pidd_sed "${pidd_spr__file}" \
+		spcd_sed "${spcd_spr__file}" \
 			"|^mirrorlist|# mirrorlist|" \
-			"|${PIDD_URL_DEFAULT}|${PIDD_URL_CHOSEN}|" \
+			"|${SPCD_URL_DEFAULT}|${SPCD_URL_CHOSEN}|" \
 			"|^# baseurl|baseurl|"
 		;;
-	"${PIDD_OS_ALPINE}")
-		pidd_spr__file="/etc/apk/repositories"
-		pidd_write "${pidd_spr__file}" "\
-${PIDD_URL_CHOSEN}/v${PIDD_OS_VERSION}/main
-${PIDD_URL_CHOSEN}/v${PIDD_OS_VERSION}/community
+	"${SPCD_OS_ALPINE}")
+		spcd_spr__file="/etc/apk/repositories"
+		spcd_write "${spcd_spr__file}" "\
+${SPCD_URL_CHOSEN}/v${SPCD_OS_VERSION}/main
+${SPCD_URL_CHOSEN}/v${SPCD_OS_VERSION}/community
 "
 		;;
-	"${PIDD_OS_DEBIAN}")
-		pidd_spr__file="/etc/apt/sources.list"
-		pidd_write "${pidd_spr__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 ${PIDD_OS_VERSION}-security main
+	"${SPCD_OS_DEBIAN}")
+		spcd_spr__file="/etc/apt/sources.list"
+		spcd_write "${spcd_spr__file}" "\
+deb ${SPCD_URL_CHOSEN} ${SPCD_OS_VERSION} main
+deb ${SPCD_URL_CHOSEN} ${SPCD_OS_VERSION}-backports main
+deb ${SPCD_URL_CHOSEN} ${SPCD_OS_VERSION}-updates main
+deb ${SPCD_URL_CHOSEN}-security ${SPCD_OS_VERSION}-security main
 "
 		;;
-	"${PIDD_OS_ROCKY}")
-		case "${PIDD_OS_VERSION}" in
-		"8") pidd_spr__file="/etc/yum.repos.d/Rocky-BaseOS.repo" ;;
-		"9") pidd_spr__file="/etc/yum.repos.d/rocky.repo" ;;
+	"${SPCD_OS_ROCKY}")
+		case "${SPCD_OS_VERSION}" in
+		"8") spcd_spr__file="/etc/yum.repos.d/Rocky-BaseOS.repo" ;;
+		"9") spcd_spr__file="/etc/yum.repos.d/rocky.repo" ;;
 		*) ;;
 		esac
-		pidd_sed "${pidd_spr__file}" \
+		spcd_sed "${spcd_spr__file}" \
 			"|^mirrorlist|# mirrorlist|" \
-			"|${PIDD_URL_DEFAULT}|${PIDD_URL_CHOSEN}|" \
+			"|${SPCD_URL_DEFAULT}|${SPCD_URL_CHOSEN}|" \
 			"|^#baseurl|baseurl|"
 		;;
-	"${PIDD_OS_UBUNTU}")
-		pidd_spr__file="/etc/apt/sources.list"
-		pidd_write "${pidd_spr__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} ${PIDD_OS_VERSION}-security main
+	"${SPCD_OS_UBUNTU}")
+		spcd_spr__file="/etc/apt/sources.list"
+		spcd_write "${spcd_spr__file}" "\
+deb ${SPCD_URL_CHOSEN} ${SPCD_OS_VERSION} main
+deb ${SPCD_URL_CHOSEN} ${SPCD_OS_VERSION}-backports main
+deb ${SPCD_URL_CHOSEN} ${SPCD_OS_VERSION}-updates main
+deb ${SPCD_URL_CHOSEN} ${SPCD_OS_VERSION}-security main
 "
 		;;
 	*) ;;
 	esac
 }
 
-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}" | "${PIDD_OS_UBUNTU}")
+spcd_set_packages_configuration() {
+	spcd_step "Set packages configuration"
+	spcd_write "${SPCD_PM_CONF_PATH}" "${SPCD_PM_CONF_TEXT}"
+	case "${SPCD_OS_ID}" in
+	"${SPCD_OS_DEBIAN}" | "${SPCD_OS_UBUNTU}")
 		export DEBIAN_FRONTEND="noninteractive"
 		;;
 	*) ;;
@@ -514,324 +514,324 @@ pidd_set_packages_configuration() {
 
 # agnostic steps
 
-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}" "${PIDD_PM_HTTPS_TEXT}"
+spcd_set_https_verification_off() {
+	if [ -n "${SPCD_CA}" ] || [ "${SPCD_PM}" = "${SPCD_PM_APT}" ]; then
+		spcd_step "Set HTTPS verification off"
+		spcd_mkdir "$(dirname "${SPCD_PM_HTTPS_PATH}")"
+		spcd_write "${SPCD_PM_HTTPS_PATH}" "${SPCD_PM_HTTPS_TEXT}"
 	fi
 }
 
-pidd_set_dns_resolving() {
-	pidd_step "Set DNS resolving"
-	for pidd_sdr__server in ${PIDD_DNS}; do
-		pidd_sdr__text="${pidd_sdr__text}\
-nameserver ${pidd_sdr__server}
+spcd_set_dns_resolving() {
+	spcd_step "Set DNS resolving"
+	for spcd_sdr__server in ${SPCD_DNS}; do
+		spcd_sdr__text="${spcd_sdr__text}\
+nameserver ${spcd_sdr__server}
 "
 	done
-	pidd_write "${PIDD_DNS_FILE}" "${pidd_sdr__text}"
+	spcd_write "${SPCD_DNS_FILE}" "${spcd_sdr__text}"
 }
 
-pidd_update_packages_catalog() {
-	pidd_step "Update packages catalog"
-	${PIDD_PM_UPDATE} || exit
+spcd_update_packages_catalog() {
+	spcd_step "Update packages catalog"
+	${SPCD_PM_UPDATE} || exit
 }
 
-pidd_install_packages_tools() {
-	pidd_step "Install packages tools"
-	pidd_install_package "${PIDD_PKG_PKG}"
+spcd_install_packages_tools() {
+	spcd_step "Install packages tools"
+	spcd_install_package "${SPCD_PKG_PKG}"
 }
 
-pidd_install_ca_certificates() {
-	pidd_step "Install CA"
-	pidd_install_package "${PIDD_PKG_CA}"
+spcd_install_ca_certificates() {
+	spcd_step "Install CA"
+	spcd_install_package "${SPCD_PKG_CA}"
 }
 
-pidd_write_ca_certificates() {
-	pidd_step "Write CA certificates"
-	pidd_mkdir "${PIDD_CA_ROOT}"
-	pidd_wcc__index=1
-	eval "pidd_wcc__text=\"\${PIDD_CA_${pidd_wcc__index}}\""
-	while [ -n "${pidd_wcc__text}" ]; do
-		pidd_wcc__path="${PIDD_CA_ROOT}/${pidd_wcc__index}.crt"
-		pidd_split
-		pidd_write "${pidd_wcc__path}" "${pidd_wcc__text}"
-		pidd_openssl "${pidd_wcc__path}"
-		pidd_wcc__index=$((pidd_wcc__index + 1))
-		eval "pidd_wcc__text=\"\${PIDD_CA_${pidd_wcc__index}}\""
+spcd_write_ca_certificates() {
+	spcd_step "Write CA certificates"
+	spcd_mkdir "${SPCD_CA_ROOT}"
+	spcd_wcc__index=1
+	eval "spcd_wcc__text=\"\${SPCD_CA_${spcd_wcc__index}}\""
+	while [ -n "${spcd_wcc__text}" ]; do
+		spcd_wcc__path="${SPCD_CA_ROOT}/${spcd_wcc__index}.crt"
+		spcd_split
+		spcd_write "${spcd_wcc__path}" "${spcd_wcc__text}"
+		spcd_openssl "${spcd_wcc__path}"
+		spcd_wcc__index=$((spcd_wcc__index + 1))
+		eval "spcd_wcc__text=\"\${SPCD_CA_${spcd_wcc__index}}\""
 	done
 }
 
-pidd_update_ca_certificates() {
-	pidd_step "Update CA certificates"
-	${PIDD_CMD_CA} || exit
+spcd_update_ca_certificates() {
+	spcd_step "Update CA certificates"
+	${SPCD_CMD_CA} || exit
 }
 
-pidd_set_https_verification_on() {
-	pidd_step "Set HTTPS verification on"
-	pidd_rm "${PIDD_PM_HTTPS_PATH}"
+spcd_set_https_verification_on() {
+	spcd_step "Set HTTPS verification on"
+	spcd_rm "${SPCD_PM_HTTPS_PATH}"
 }
 
-pidd_upgrade_packages() {
-	pidd_step "Upgrade packages"
-	${PIDD_PM_UPGRADE} || exit
+spcd_upgrade_packages() {
+	spcd_step "Upgrade packages"
+	${SPCD_PM_UPGRADE} || exit
 }
 
-pidd_install_git() {
-	pidd_step "Install Git"
-	pidd_install_package "${PIDD_PKG_GIT}"
+spcd_install_git() {
+	spcd_step "Install Git"
+	spcd_install_package "${SPCD_PKG_GIT}"
 }
 
-pidd_install_python() {
-	pidd_step "Install Python"
-	pidd_install_package "${PIDD_PYTHON_PACKAGE}"
-	pidd_split
-	pidd_ln_python "${PIDD_PYTHON_COMMAND}"
+spcd_install_python() {
+	spcd_step "Install Python"
+	spcd_install_package "${SPCD_PYTHON_PACKAGE}"
+	spcd_split
+	spcd_ln_python "${SPCD_PYTHON_COMMAND}"
 }
 
 # TODO move to Python
-pidd_install_rsync() {
-	pidd_step "Install Rsync"
-	pidd_install_package "${PIDD_PKG_RSYNC}"
+spcd_install_rsync() {
+	spcd_step "Install Rsync"
+	spcd_install_package "${SPCD_PKG_RSYNC}"
 }
 
 # TODO move to Python
-pidd_install_ssh() {
-	pidd_step "Install SSH"
-	pidd_install_package "${PIDD_PKG_SSH}"
+spcd_install_ssh() {
+	spcd_step "Install SSH"
+	spcd_install_package "${SPCD_PKG_SSH}"
 }
 
-pidd_clean_packages_cache() {
-	pidd_step "Clean packages cache"
-	${PIDD_PM_CLEAN} || exit
+spcd_clean_packages_cache() {
+	spcd_step "Clean packages cache"
+	${SPCD_PM_CLEAN} || exit
 }
 
-pidd_install_python_modules() {
-	pidd_step "Install Python modules"
-	pidd_ipm__root="$(mktemp --directory)" || exit
-	echo "→ ${pidd_ipm__root}"
-	for pidd_ipm__repository in "${PIDD_GIT_MAIN}" "${PIDD_GIT_ROOT}"; do
-		case "${pidd_ipm__repository}" in
-		http*) pidd_ipm__url="${pidd_ipm__repository}" ;;
-		/*) pidd_ipm__url="${PIDD_PROJECT_ROOT}${pidd_ipm__repository}" ;;
-		*) pidd_ipm__url="\
-${PIDD_PROJECT_ROOT}/${PIDD_PROJECT_PATH}/${pidd_ipm__repository}" ;;
+spcd_install_python_modules() {
+	spcd_step "Install Python modules"
+	spcd_ipm__root="$(mktemp --directory)" || exit
+	echo "→ ${spcd_ipm__root}"
+	for spcd_ipm__repository in "${SPCD_GIT_MAIN}" "${SPCD_GIT_ROOT}"; do
+		case "${spcd_ipm__repository}" in
+		http*) spcd_ipm__url="${spcd_ipm__repository}" ;;
+		/*) spcd_ipm__url="${SPCD_PROJECT_ROOT}${spcd_ipm__repository}" ;;
+		*) spcd_ipm__url="\
+${SPCD_PROJECT_ROOT}/${SPCD_PROJECT_PATH}/${spcd_ipm__repository}" ;;
 		esac
-		pidd_ipm__name="$(basename "${pidd_ipm__url}")"
-		pidd_split
+		spcd_ipm__name="$(basename "${spcd_ipm__url}")"
+		spcd_split
 		echo "\
-${pidd_ipm__url}
+${spcd_ipm__url}
 ↓"
 		git clone \
-			"${pidd_ipm__url}" \
-			"${pidd_ipm__root}/${pidd_ipm__name}" ||
+			"${spcd_ipm__url}" \
+			"${spcd_ipm__root}/${spcd_ipm__name}" ||
 			exit
-		pidd_ipm__path="${pidd_ipm__root}/${pidd_ipm__name}/${pidd_ipm__name}"
+		spcd_ipm__path="${spcd_ipm__root}/${spcd_ipm__name}/${spcd_ipm__name}"
 		echo "\
-${pidd_ipm__path}
+${spcd_ipm__path}
 ↓
-${PIDD_PYTHON_PACKAGES}"
-		cp --recursive "${pidd_ipm__path}" "${PIDD_PYTHON_PACKAGES}" ||
+${SPCD_PYTHON_PACKAGES}"
+		cp --recursive "${spcd_ipm__path}" "${SPCD_PYTHON_PACKAGES}" ||
 			exit
 	done
-	pidd_split
-	pidd_ls "${PIDD_PYTHON_PACKAGES}"
-	pidd_split
-	pidd_rm "${pidd_ipm__root}"
+	spcd_split
+	spcd_ls "${SPCD_PYTHON_PACKAGES}"
+	spcd_split
+	spcd_rm "${spcd_ipm__root}"
 }
 
-pidd_write_python_module() {
-	pidd_step "Write Python module"
-	for pidd_wpm__variable in \
+spcd_write_python_module() {
+	spcd_step "Write Python module"
+	for spcd_wpm__variable in \
 		OS_ID OS_VERSION \
 		PROJECT_ROOT PROJECT_PATH PROJECT_NAME \
 		OPEN DOWN VERT SPLT __UP SHUT; do
-		pidd_wpm__value="$(pidd_echo "PIDD_${pidd_wpm__variable}")"
-		pidd_wpm__text="${pidd_wpm__text}${pidd_wpm__value}
+		spcd_wpm__value="$(spcd_echo "SPCD_${spcd_wpm__variable}")"
+		spcd_wpm__text="${spcd_wpm__text}${spcd_wpm__value}
 "
 	done
-	pidd_write "${PIDD_PYTHON_PACKAGES}/env.py" "${pidd_wpm__text}
-PIDD_STEP = $((PIDD_STEP + 1))
+	spcd_write "${SPCD_PYTHON_PACKAGES}/env.py" "${spcd_wpm__text}
+SPCD_STEP = $((SPCD_STEP + 1))
 "
 }
 
-pidd_switch_to_python() {
-	pidd_step "Switch to Python"
-	pidd_stp__name="$(basename "${PIDD_GIT_MAIN}")"
+spcd_switch_to_python() {
+	spcd_step "Switch to Python"
+	spcd_stp__name="$(basename "${SPCD_GIT_MAIN}")"
 	echo "\
-${PIDD_PATH}
+${SPCD_PATH}
 ↓
-${PIDD_PYTHON_PACKAGES}/${pidd_stp__name}"
-	"${PIDD_PYTHON_ALIAS}" -m "${pidd_stp__name}" "${@}"
+${SPCD_PYTHON_PACKAGES}/${spcd_stp__name}"
+	"${SPCD_PYTHON_ALIAS}" -m "${spcd_stp__name}" "${@}"
 }
 
 # functions
 
-pidd_cat() {
-	pidd_cat__file="${1}"
-	if [ -n "${pidd_cat__file}" ]; then
-		pidd_open "${pidd_cat__file}"
-		cat "${pidd_cat__file}" || exit
-		pidd_shut "${pidd_cat__file}"
+spcd_cat() {
+	spcd_cat__file="${1}"
+	if [ -n "${spcd_cat__file}" ]; then
+		spcd_open "${spcd_cat__file}"
+		cat "${spcd_cat__file}" || exit
+		spcd_shut "${spcd_cat__file}"
 	fi
 }
 
-pidd_echo() {
+spcd_echo() {
 	if [ -n "${1}" ]; then
-		for pidd_echo__name in "${@}"; do
-			pidd_echo__text=""
-			eval "pidd_echo__text=\"\${${pidd_echo__name}}\""
-			echo "${pidd_echo__name} = \"${pidd_echo__text}\""
+		for spcd_echo__name in "${@}"; do
+			spcd_echo__text=""
+			eval "spcd_echo__text=\"\${${spcd_echo__name}}\""
+			echo "${spcd_echo__name} = \"${spcd_echo__text}\""
 		done
 	fi
 }
 
-pidd_error_ci() {
+spcd_error_ci() {
 	echo "× CI: ${*}"
-	exit "${PIDD_ERROR_CI}"
+	exit "${SPCD_ERROR_CI}"
 }
 
-pidd_error_os() {
-	pidd_error_os__variable="${1}"
+spcd_error_os() {
+	spcd_error_os__variable="${1}"
 	printf "× OS: "
-	pidd_echo "${pidd_error_os__variable}"
-	exit "${PIDD_ERROR_OS}"
+	spcd_echo "${spcd_error_os__variable}"
+	exit "${SPCD_ERROR_OS}"
 }
 
-pidd_grep_os() {
-	pidd_grep_os__variable="${1}"
-	[ -n "${pidd_grep_os__variable}" ] &&
-		grep "^${pidd_grep_os__variable}=" "/etc/os-release" |
-		sed "s|^${pidd_grep_os__variable}=||" |
+spcd_grep_os() {
+	spcd_grep_os__variable="${1}"
+	[ -n "${spcd_grep_os__variable}" ] &&
+		grep "^${spcd_grep_os__variable}=" "/etc/os-release" |
+		sed "s|^${spcd_grep_os__variable}=||" |
 			sed "s|^\"\(.*\)\"$|\1|"
 }
 
-pidd_install_package() {
-	pidd_install_package__name="${1}"
-	if [ -n "${pidd_install_package__name}" ]; then
-		${PIDD_PM_INSTALL} "${pidd_install_package__name}" || exit
+spcd_install_package() {
+	spcd_install_package__name="${1}"
+	if [ -n "${spcd_install_package__name}" ]; then
+		${SPCD_PM_INSTALL} "${spcd_install_package__name}" || exit
 	fi
 }
 
-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/${PIDD_PYTHON_ALIAS}" || exit
+spcd_ln_python() {
+	spcd_ln_python__command="${1}"
+	if [ -n "${spcd_ln_python__command}" ]; then
+		echo "→ ${SPCD_PYTHON_ALIAS} → ${spcd_ln_python__command}"
+		ln -f -s "${spcd_ln_python__command}" \
+			"/usr/bin/${SPCD_PYTHON_ALIAS}" || exit
 	fi
 }
 
-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 "${pidd_ls__path}"
+spcd_ls() {
+	spcd_ls__path="${1}"
+	if [ -n "${spcd_ls__path}" ]; then
+		spcd_open "${spcd_ls__path}"
+		ls -a -l "${spcd_ls__path}" || exit
+		spcd_shut "${spcd_ls__path}"
 	fi
 }
 
-pidd_mkdir() {
-	pidd_mkdir__path="${1}"
-	if [ -n "${pidd_mkdir__path}" ]; then
-		echo "→ ${pidd_mkdir__path}"
-		mkdir --parents "${pidd_mkdir__path}" || exit
+spcd_mkdir() {
+	spcd_mkdir__path="${1}"
+	if [ -n "${spcd_mkdir__path}" ]; then
+		echo "→ ${spcd_mkdir__path}"
+		mkdir --parents "${spcd_mkdir__path}" || exit
 	fi
 }
 
-pidd_open() {
-	echo "${PIDD_OPEN}${*}"
+spcd_open() {
+	echo "${SPCD_OPEN}${*}"
 }
 
-pidd_openssl() {
-	pidd_openssl__file="${1}"
-	if [ -f "${pidd_openssl__file}" ]; then
+spcd_openssl() {
+	spcd_openssl__file="${1}"
+	if [ -f "${spcd_openssl__file}" ]; then
 		openssl x509 \
-			-in "${pidd_openssl__file}" \
+			-in "${spcd_openssl__file}" \
 			-noout -text ||
 			exit
 	fi
 }
 
-pidd_rm() {
-	pidd_rm__path="${1}"
-	if [ -e "${pidd_rm__path}" ]; then
-		echo "← ${pidd_rm__path}"
-		rm -r "${pidd_rm__path}" || exit
+spcd_rm() {
+	spcd_rm__path="${1}"
+	if [ -e "${spcd_rm__path}" ]; then
+		echo "← ${spcd_rm__path}"
+		rm -r "${spcd_rm__path}" || exit
 	fi
 }
 
-pidd_sed() {
-	pidd_sed__file="${1}"
+spcd_sed() {
+	spcd_sed__file="${1}"
 	shift
-	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
+	if [ -f "${spcd_sed__file}" ]; then
+		spcd_cat "${spcd_sed__file}"
+		for spcd_sed__regex in "${@}"; do
+			sed --in-place "s${spcd_sed__regex}g" "${spcd_sed__file}" &&
+				spcd_cat "${spcd_sed__file}" || exit
 		done
 	fi
 }
 
-pidd_shut() {
-	echo "${PIDD_SHUT}${*}"
+spcd_shut() {
+	echo "${SPCD_SHUT}${*}"
 }
 
-pidd_split() {
-	echo "${PIDD_SPLT}"
+spcd_split() {
+	echo "${SPCD_SPLT}"
 }
 
-pidd_step() {
-	PIDD_STEP=$((PIDD_STEP + 1))
+spcd_step() {
+	SPCD_STEP=$((SPCD_STEP + 1))
 	echo "\
-${PIDD_DOWN}
-${PIDD_VERT} ${PIDD_STEP} ${*}
-${PIDD___UP}"
+${SPCD_DOWN}
+${SPCD_VERT} ${SPCD_STEP} ${*}
+${SPCD___UP}"
 }
 
-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}"
+spcd_write() {
+	spcd_write__file="${1}"
+	spcd_write__text="${2}"
+	if [ -n "${spcd_write__file}" ]; then
+		[ -f "${spcd_write__file}" ] && spcd_cat "${spcd_write__file}"
+		echo "→ ${spcd_write__file}"
+		printf "%s" "${spcd_write__text}" >"${spcd_write__file}" || exit
+		spcd_cat "${spcd_write__file}"
 	fi
 }
 
 # constants
 
-PIDD_BOX_DOWN="╭"
-PIDD_BOX_LEFT="╴"
-PIDD_BOX_RIGHT="╶"
-PIDD_BOX_UP="╰"
-PIDD_BOX_VERTICAL="│"
+SPCD_BOX_DOWN="╭"
+SPCD_BOX_LEFT="╴"
+SPCD_BOX_RIGHT="╶"
+SPCD_BOX_UP="╰"
+SPCD_BOX_VERTICAL="│"
 
-PIDD_ERROR_CI=2
-PIDD_ERROR_OS=1
+SPCD_ERROR_CI=2
+SPCD_ERROR_OS=1
 
-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"
+SPCD_OS_ALMA="alma"
+SPCD_OS_ALPINE="alpine"
+SPCD_OS_ARCH="arch"
+SPCD_OS_DEBIAN="debian"
+SPCD_OS_FEDORA="fedora"
+SPCD_OS_ROCKY="rocky"
+SPCD_OS_UBUNTU="ubuntu"
 
-PIDD_PM_APK="apk"
-PIDD_PM_APT="apt"
-PIDD_PM_DNF="dnf"
-PIDD_PM_PACMAN="pacman"
+SPCD_PM_APK="apk"
+SPCD_PM_APT="apt"
+SPCD_PM_DNF="dnf"
+SPCD_PM_PACMAN="pacman"
 
-PIDD_HORIZONTAL="────╌╌╌╌┄┄┄┄┈┈┈┈"
+SPCD_HORIZONTAL="────╌╌╌╌┄┄┄┄┈┈┈┈"
 
-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}${PIDD_BOX_LEFT}"
+SPCD_OPEN="${SPCD_BOX_DOWN}${SPCD_BOX_LEFT}"
+SPCD_DOWN="${SPCD_BOX_DOWN}${SPCD_HORIZONTAL}"
+SPCD_VERT="${SPCD_BOX_VERTICAL}"
+SPCD_SPLT="${SPCD_BOX_RIGHT}${SPCD_HORIZONTAL}"
+SPCD___UP="${SPCD_BOX_UP}${SPCD_HORIZONTAL}"
+SPCD_SHUT="${SPCD_BOX_UP}${SPCD_BOX_LEFT}"
 
 # run
-pidd_main "${@}"
+spcd_main "${@}"