extensions shell function.

    w3m "https://lite.duckduckgo.com/lite/?q=$(echo "$@" | urlencode)"

}

extension () {

    [ "$#" -gt 0 ] || return 0

    for filename in "$@"

    do

        echo "${filename##*.}"

    done

}

genpass () {

    bytes="${1:-32}"

    head --bytes="$bytes" /dev/urandom | base64 --wrap=0