Script to clean up files that msys2-runtime moved to recycle bin because they were in use

cleanup.sh

#!/bin/bash -ex

export LC_CTYPE=C.UTF-8 LC_COLLATE=C.UTF-8

IFS=. read -r cygmajor cygminor _ < <(uname -r)

declare -a roots

if [ "${cygmajor}" -gt 3 -o "${cygmajor}" -eq 3 -a "${cygminor}" -ge 6 ]; then
  # as of cygwin 3.6, volume roots are parsable from /proc/mounts
  # (noumount is the option that indicates a cygdrive mount)
  readarray -t -d $'\0' roots < <(
    cut -d' ' -f2,4 /proc/mounts | grep '\<noumount\>[^ ]*$' |
    cut -d' ' -f1 | xargs -d'\n' printf '%b\0')
else
  # before that, just punt and look at the root of the drive / is mounted on
  root="$(cygpath -w /)"
  roots=("$(cygpath -u "${root:0:2}")")
  unset root
fi

declare -a trash
readarray -t -d $'\0' trash < <(
  LC_CTYPE=C LC_COLLATE=C \
  find "${roots[@]}" -maxdepth 1 -iname '$Recycle.Bin' -print0 |
  LC_CTYPE=C LC_COLLATE=C \
  find -files0-from - -maxdepth 2 \( -name $'.\uDC6D\uDC73\uDC79\uDC73*' -o \
                                     -name $'.\uF76D\uF773\uF779\uF773*' -o \
                                     -name '.msys*' -o \
                                     -name $'.\uDC63\uDC79\uDC67*' -o \
                                     -name $'.\uF763\uF779\uF767*' -o \
                                     -name '.cyg*' \) -print0)
if (( ${#trash[@]} )); then
  ls -la "${trash[@]}"
  read -r -p "Remove? (y/N) "
  
  if [[ "${REPLY^^}" == "Y" ]]; then
    rm -f "${trash[@]}"
  fi
fi