BASH: OS Info helper. Reads 'os-release' options passed by user.

os-info.sh

function os-info () { 
    keys=$@
    function help () { 
        echo -e "Try: NAME, PRETTY_NAME, VERSION_ID, VERSION, ID_LIKE"
        echo -e "REF: https://www.freedesktop.org/software/systemd/man/os-release.html"
        return 0
    }
    [[ $keys == '-h' ]] && help
    [[ $# -eq 0 ]] && help
    for key in "$@"; do
        sed -ne "s/^$key=//p" /etc/os-release | tr -d '"'
    done
}