diff --git a/cd.sh b/cd.sh
index 06ab309..7a49275 100644
--- a/cd.sh
+++ b/cd.sh
@@ -38,34 +38,52 @@ cd_set_environment () {
                 "bookworm")
                     echo "TODO"
                 ;;
-                *) cd_error_os "CD_OS_VERSION=" ;;
+                *)
+                    echo "CD_OS_VERSION"
+                    exit 2
+                ;;
             esac
         ;;
-        *) cd_error_os "CD_OS_NAME=" ;;
+        *)
+            echo "CD_OS_NAME"
+            exit 1
+        ;;
     esac
-    # ci / github
-    if [ "${GITHUB_ACTIONS}" ] ; then
-        CD_SERVER_URL="${GITHUB_SERVER_URL}"
-        CD_PROJECT_BRANCH="${GITHUB_REF_NAME}"
-        CD_PROJECT_NAME="$(basename "${GITHUB_REPOSITORY}")"
-        CD_PROJECTS_GROUP="$(dirname "${GITHUB_REPOSITORY}")"
-    # ci / gitlab
-    elif [ "${GITLAB_CI}" ] ; then
-        CD_SERVER_URL="${CI_SERVER_URL}"
-        CD_PROJECT_BRANCH="${CI_COMMIT_BRANCH}"
-        CD_PROJECT_NAME="$(basename "${CI_PROJECT_PATH}")"
-        CD_PROJECTS_GROUP="$(dirname "${CI_PROJECT_PATH}")"
-    # ci / none
-    else
-        cd_error_ci "ø"
+    # project / branch
+    [ "${CI_COMMIT_BRANCH}" ] && CD_PROJECT_BRANCH="${CI_COMMIT_BRANCH}"
+    [ "${GITHUB_REF_NAME}" ] && CD_PROJECT_BRANCH="${GITHUB_REF_NAME}"
+    if [ ! "${CD_PROJECT_BRANCH}" ] ; then
+        echo "CD_PROJECT_BRANCH"
+        exit 3
     fi
-    #
-    [ "${CD_SERVER_URL}" ] || cd_error_ci "CD_SERVER_URL"
-    [ "${CD_PROJECT_BRANCH}" ] || cd_error_ci "CD_PROJECT_BRANCH"
-    [ "${CD_PROJECT_NAME}" ] || cd_error_ci "CD_PROJECT_NAME"
-    [ "${CD_PROJECTS_GROUP}" ] || cd_error_ci "CD_PROJECTS_GROUP"
-    #
-    CD_PROJECTS_URL="${CD_SERVER_URL}/${CD_PROJECTS_GROUP}"
+    # project / name
+    [ "${CI_PROJECT_PATH}" ] \
+    && CD_PROJECT_NAME="$(basename "${CI_PROJECT_PATH}")"
+    [ "${GITHUB_REPOSITORY}" ] \
+    && CD_PROJECT_NAME="$(basename "${GITHUB_REPOSITORY}")"
+    if [ ! "${CD_PROJECT_NAME}" ] ; then
+        echo "CD_PROJECT_NAME"
+        exit 3
+    fi
+    # projects / group
+    [ "${CI_PROJECT_PATH}" ] \
+    && CD_PROJECTS_GROUP="$(dirname "${CI_PROJECT_PATH}")"
+    [ "${GITHUB_REPOSITORY}" ] \
+    && CD_PROJECTS_GROUP="$(dirname "${GITHUB_REPOSITORY}")"
+    if [ ! "${CD_PROJECTS_GROUP}" ] ; then
+        echo "CD_PROJECTS_GROUP"
+        exit 3
+    fi
+    # projects / url
+    [ "${CI_SERVER_URL}" ] && CD_PROJECTS_URL="${CI_SERVER_URL}"
+    [ "${GITHUB_SERVER_URL}" ] && CD_PROJECTS_URL="${GITHUB_SERVER_URL}"
+    if [ "${CD_PROJECTS_URL}" ] ; then
+        CD_PROJECTS_URL="${CD_PROJECTS_URL}/${CD_PROJECTS_GROUP}"
+    else
+        echo "CD_PROJECTS_URL"
+        exit 3
+    fi
+    # project / url
     CD_PROJECT_URL="${CD_PROJECTS_URL}/${CD_PROJECT_NAME}"
     #
     echo -n "\
@@ -77,13 +95,11 @@ CD_DNS_FILE=${CD_DNS_FILE}
 CD_PYTHON_COMMAND=${CD_PYTHON_COMMAND}
 CD_PYTHON_PACKAGES=${CD_PYTHON_PACKAGES}
 #
-CD_SERVER_URL=${CD_SERVER_URL}
 CD_PROJECT_BRANCH=${CD_PROJECT_BRANCH}
 CD_PROJECT_NAME=${CD_PROJECT_NAME}
-CD_PROJECTS_GROUP=${CD_PROJECTS_GROUP}
-#
-CD_PROJECTS_URL=${CD_PROJECTS_URL}
 CD_PROJECT_URL=${CD_PROJECT_URL}
+CD_PROJECTS_GROUP=${CD_PROJECTS_GROUP}
+CD_PROJECTS_URL=${CD_PROJECTS_URL}
 "
 }
 
@@ -111,7 +127,7 @@ deb https://deb.debian.org/debian-security bookworm-security main
 "
             cd_cat "/etc/apt/sources.list"
         ;;
-        *) cd_error_os "cd_set_packages_repositories" ;;
+        *) exit 1 ;;
     esac
 }
 
@@ -129,7 +145,7 @@ Dir::Etc::SourceParts \"\";
 "
             cd_cat "/etc/apt/apt.conf.d/apt.conf"
         ;;
-        *) cd_error_os "cd_set_packages_configuration" ;;
+        *) exit 1 ;;
     esac
 }
 
@@ -142,7 +158,7 @@ Acquire::https::Verify-Peer False;
 "
             cd_cat "/etc/apt/apt.conf.d/https"
         ;;
-        *) cd_error_os "cd_set_https_verification_off" ;;
+        *) exit 1 ;;
     esac
 }
 
@@ -150,7 +166,7 @@ cd_update_packages_catalog () {
     cd_step "Update packages catalog"
     case "${CD_OS_NAME}" in
         "debian") apt-get update || exit ;;
-        *) cd_error_os "cd_update_packages_catalog" ;;
+        *) exit 1 ;;
     esac
 }
 
@@ -158,7 +174,7 @@ cd_install_packages_tools () {
     cd_step "Install packages tools"
     case "${CD_OS_NAME}" in
         "debian") cd_install_package "apt-utils" ;;
-        *) cd_error_os "cd_install_packages_tools" ;;
+        *) exit 1 ;;
     esac
 }
 
@@ -166,7 +182,7 @@ cd_install_ca () {
     cd_step "Install CA"
     case "${CD_OS_NAME}" in
         "debian") cd_install_package "ca-certificates" ;;
-        *) cd_error_os "cd_install_ca" ;;
+        *) exit 1 ;;
     esac
 }
 
@@ -175,7 +191,7 @@ local target
     cd_step "Copy CA"
     case "${CD_OS_NAME}" in
         "debian") target="/usr/local/share/ca-certificates" ;;
-        *) cd_error_os "cd_copy_ca" ;;
+        *) exit 1 ;;
     esac
     # TODO copy
 }
@@ -184,7 +200,7 @@ cd_update_ca () {
     cd_step "Update CA"
     case "${CD_OS_NAME}" in
         "debian") update-ca-certificates || exit ;;
-        *) cd_error_os "cd_update_ca" ;;
+        *) exit 1 ;;
     esac
 }
 
@@ -192,7 +208,7 @@ cd_set_https_verification_on () {
     cd_step "Set HTTPS verification on"
     case "${CD_OS_NAME}" in
         "debian") cd_rm "/etc/apt/apt.conf.d/https" ;;
-        *) cd_error_os "cd_set_https_verification_on" ;;
+        *) exit 1 ;;
     esac
 }
 
@@ -200,7 +216,7 @@ cd_upgrade_packages () {
     cd_step "Upgrade packages"
     case "${CD_OS_NAME}" in
         "debian") apt-get upgrade --yes || exit ;;
-        *) cd_error_os "cd_upgrade_packages" ;;
+        *) exit 1 ;;
     esac
 }
 
@@ -208,7 +224,7 @@ cd_install_git () {
     cd_step "Install Git"
     case "${CD_OS_NAME}" in
         "debian") cd_install_package "git" ;;
-        *) cd_error_os "cd_install_git" ;;
+        *) exit 1 ;;
     esac
 }
 
@@ -216,7 +232,7 @@ cd_install_python () {
     cd_step "Install Python"
     case "${CD_OS_NAME}" in
         "debian") cd_install_package "python3" ;;
-        *) cd_error_os "cd_install_python" ;;
+        *) exit 1 ;;
     esac
 }
 
@@ -224,7 +240,7 @@ cd_clean_packages_cache () {
     cd_step "Clean packages cache"
     case "${CD_OS_NAME}" in
         "debian") apt-get clean || exit ;;
-        *) cd_error_os "cd_clean_packages_cache" ;;
+        *) exit 1 ;;
     esac
 }
 
@@ -279,15 +295,6 @@ cd_cat () {
     fi
 }
 
-cd_error_ci () {
-    echo "× CI: ${1}"
-    exit 1
-}
-cd_error_os () {
-    echo "× OS: ${1}"
-    exit 2
-}
-
 cd_install_package () {
     if [ "${1}" ] ; then
         case "${CD_OS_NAME}" in