Script to deletes "*:Zone.Identifier" files. #bin #bash #wsl2

unzone

#!/bin/bash
#
# @file unzone
#
# Deletes "*:Zone.Identifier" files.
#
# Usage: unzone [OPTIONS...] [DIRECTORIES...]
# Options:
#   -h, --help       print this help
#   -n, --dry-run    show what would be deleted, but do nothing
#   -xdev            do not descend into other filesystems
#
set -euo pipefail

PROG="${0##*/}"

dry_run=0
use_xdev=0

while [[ $# -gt 0 ]]; do
  case "$1" in
    -h|--help)
      awk -v prog="$PROG" '
        /^# Usage:/ { show=1 }
        show && /^# *$/ { exit }
        show {
          sub(/^# ?/, "", $0)
          gsub(/unzone/, prog, $0)
          print
        }
        ' "$0"
      exit 0
      ;;
    -n|--dry-run)
      dry_run=1
      shift
      ;;
    -xdev)
      use_xdev=1
      shift
      ;;
    --)
      shift
      break
      ;;
    -*)
      echo "$PROG: unknown option: $1" >&2
      exit 2
      ;;
    *)
      break
      ;;
  esac
done

if (( $# == 0 )); then
  target_directories=(.)
else
  target_directories=("$@")
fi

find_opts=()
(( use_xdev )) && find_opts+=(-xdev)

for d in "${target_directories[@]}"; do
  [[ -d "$d" ]] || { echo "$PROG: not a directory: '$d'" >&2; exit 2; }
done

if (( dry_run )); then
  find "${target_directories[@]}" "${find_opts[@]}" -type f -name '*:Zone.Identifier' -exec printf "would remove '%s'\n" {} \;
else
  find "${target_directories[@]}" "${find_opts[@]}" -type f -name '*:Zone.Identifier' -exec rm -v -- {} +
fi