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@aliss@outerheaven.club that's not bad, except you have a mismatch between ID and dist
I'd probably do something likegetopts 'd...' # ... d) dist="$OPTARG" ;; # .... if [ -z "$dist" ] && [ -f /etc/os-release ]; then . /etc/os-release dist="${ID_LIKE:-$ID}" fiAs one side-note, if this was bash, you could avoid additional leakage using my upvar by slapping the then into a subshell that you source ?