Add a magic mktouch function to bash/functions

[benknoble]

cf. this SO question and the answer I like

Basically, the function is this:

mktouch() {
    if [ $# -lt 1 ]; then
        echo "Missing argument";
        return 1;
    fi

    for f in "$@"; do
        mkdir -p -- "$(dirname -- "$f")"
        touch -- "$f"
    done
}