Archive files by year and month from the current folder in bash

archive.sh

#!/bin/bash

currentYearMonth=$(date "+%Y-%m")

echo "Ignoring files from $currentYearMonth"

find . -maxdepth 1 -not -name "archive.sh" -print0 | while read -d $'\0' file
do
  excludeDate=0
  [[ "$file" =~ [0-9]{4}-[0-9]{2} ]] && excludeDate=1

  #fileTargetFolder=$(stat -c "%Z" "$file" | xargs -I {} date -d @{} "+%Y-%m")
  fileTargetFolder=$(date -r "$file" "+%Y-%m")
  if [ "$excludeDate" != 1 ] && [ "$currentYearMonth" != "$fileTargetFolder" ]; then
    echo $file
    mkdir -p "$fileTargetFolder"
    mv -v "$file" "$fileTargetFolder"
  fi
done