diff --git a/cd.sh b/cd.sh
index 57ddc83..0e50c6a 100644
--- a/cd.sh
+++ b/cd.sh
@@ -12,7 +12,7 @@ rwx \
 
 # main
 cd_main () {
-    cd_set_environment
+    cd_set_environment_variables
     cd_set_dns_resolving
     cd_set_packages_repositories
     cd_set_packages_configuration
@@ -34,9 +34,14 @@ cd_main () {
 
 # steps
 
-cd_set_environment () {
+cd_set_environment_variables () {
 local variable
-    cd_step "Set environment"
+    cd_step "Set environment variables"
+    #
+    case "$(cd_grep_os ID)" in
+        "debian") CD_OS_ID="${CD_OS_DEBIAN}" ;;
+        "almalinux") CD_OS_ID="${CD_OS_ALMA}" ;;
+    esac
     #
     CD_CA_PACKAGE="ca-certificates"
     CD_DNS_FILE="/etc/resolv.conf"