Re: is there a way to reverse list $@

[Greg Wooledge]

On Thu, Oct 24, 2024 at 00:54:39 +0200, #!microsuxx wrote:
> i tried ${@:$#:-4} where 5 args and the last four in reverse order are
> wanted
> if not i do in awk

There is no parameter expansion syntax that expands in reverse.
If you want to iterate over the arguments in reverse order, use a loop:

    for ((i=$#; i>=1; --i)); do
        arg=${!i}
        printf 'Argument %s is %s\n' "$i" "$arg"
    done

If you want the reversed arguments stored in an array, you'll have to
build such an array yourself.

    rev=()
    for ((i=$#; i>=1; --i)); do
        rev+=( "${!i}" )
    done
    my_list_processor "${rev[@]}"