mktemp-inc.sh

#!/usr/bin/env bash

function PrintUsage
{
    echo "Description:"
    echo "  Creates a temporary directory name that is not taken before running" 
    echo "  this command. Works simillarly to mktemp but with incremental number"
    echo "  suffix (e.g. tmp_1, tmp_2, ...)"
    echo ""
    echo "Usage:"
    echo "  $0 [-h|--help] [-p|--prefix <prefix>]"
    echo ""
    echo "Options:"
    echo "  -h, --help             Shows this usage info."
    echo "  -p, --prefix <prefix>  The Prefix of the directory name that should"
    echo "                         be used. (default: 'tmp_')"
    echo ""
}

function LogErrorMessageAndExit
{
    if [[ "$TERM" == *xterm* || "$TERM" == *xterm-color* ]]; then
        printf "\033[0;31m%s\033[0m\n" "$1" >&2
    else
        echo "$1" >&2
    fi
    
    echo ""
    PrintUsage
    exit 1
}

prefix="tmp_"

while [[ $# -gt 0 ]]; do
        case "$1" in
            -h|--help)
                PrintUsage
                exit 0
                ;;
            -p|--prefix)
                if [[ $# -lt 2 ]]; then
                    LogErrorMessageAndExit "'$1' Option specified, but no prefix found!"
                fi
                prefix=$2
                shift 2
                ;;
            *)
                LogErrorMessageAndExit "Unknown Option '$1'"
                ;;
        esac
    done

count=0

while true; do
    directoryName="${prefix}${count}"

    if [[ ! -d "$directoryName" ]]; then
        mkdir "$directoryName"
        echo "$directoryName"
        break
    fi

    ((count++))
done

           DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                   Version 2, December 2004
 
Copyright (C) 2023 Dominik Viererbe <hello@dviererbe.de>

Everyone is permitted to copy and distribute verbatim or modified
copies of this license document, and changing it is allowed as long
as the name is changed.
 
           DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
  TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

 0. You just DO WHAT THE FUCK YOU WANT TO.