Convert .pam_environment file to shell statements #shell #bash

convertPamToShell.sh

#!/usr/bin/env bash
# shellcheck disable=SC1090,SC1110,SC2086

if [ -z "$BASH_VERSION" ]; then
    echo This file should be executed or sourced by Bash shell
    exit 2
fi
 
perl -pe  's/\\\n/ /'  ~/.pam_environment \
|   sed --regexp-extended $'
            /^#/ d
            /^\\s*$/ d
            s/@\\{PAM_USER\\}/'"$USER"$'/g
            s#@\\{HOME\\}#'"$HOME"$'#g
            s/^(\\S+)\\s+DEFAULT=(.+)\\s+OVERRIDE=(.+)$/[ -n "${\\1}" ] \\&\\& export \\1=\\3 || export \\1=\\2/g
            s/\\s+DEFAULT=\\s*/=/g
            s/\\s+OVERRIDE=\\s*/=/g
            /^\\[/! s/^/export /g
    '