mvdate

mvdate

#!/usr/bin/env bash

if [[ $1 ]]; then
  case $1 in
    [1-9]) digit=$1 ;;
        *) echo 'error: digit invalid'; exit 1 ;;
  esac
else
  digit=2
fi

listfiles() {
  count=1
  for file in *; do
    if [[ -f "$file" ]]; then
      ext="${file##*.}"
      newfile=$(printf "$(date -r $file +%Y-%m-%d)-%0${digit}d.$ext\n" "$count")

      case $1 in
        'mv') mv "$file" "$newfile" ;;
           *) echo "$file >> $newfile" | column -t ;;
      esac

      ((count++))
    fi
  done
}

listfiles
echo
read -p "Rename? [y/N]: " rename

case ${rename,,} in
  'y') listfiles mv ;;
    *) exit 0       ;;
esac