added rolling release support (or any distribution not providing a version)

lib/version.sh

@@ -21,18 +21,24 @@ read_os_release()
     (
         # Iniitalise version codename in case the var don't exists
         VERSION_CODENAME="NULL"
-        
+
         # Import the file in the environment
         source /etc/os-release
 
-        if [[ -z $ID || -z $VERSION_ID ]]; then
+        if [[ -z $ID ]]; then
             prnt E "Your /etc/os-release file mises some vital information."
             die --force 8
         fi
-        
+
+        if [[ -z $VERSION_ID ]]; then
+            local maj=$(uname -r | cut -d'.' -f1)
+            local min=$(uname -r | cut -d'.' -f2)
+            VERSION_ID="$maj.$min"
+            unset maj min
+        fi
+
         # Return values on standard stdout
         echo ${ID,,} ${VERSION_ID} ${VERSION_CODENAME,,}
-        #prnt I "OS is: ${ID,,} ${VERSION_ID} ${VERSION_CODENAME,,}"
     )
 }
 export read_os_release
@@ -54,3 +60,4 @@ get_os_version()
         export SYS_CODE=$3
     fi
 }
+export -f get_os_version