Clean out temporary image files from a directory of your choosing.

tmp-image-cleanup.sh

#!/usr/bin/env bash

FILE_AGE=$1
FILE_COUNT=$2
FILE_LOCATION=$3

if [ -z "$FILE_AGE" ] || [ -z "$FILE_COUNT" ] || [ -z "$FILE_LOCATION" ]; then
  echo "Usage: $(basename $0) [file age in days] [file count] [directory location]"
  exit 1
fi

find $FILE_LOCATION -type f -print -mtime +$FILE_AGE \
| file --mime-type -f - \
| grep 'image/' \
| head -$FILE_COUNT \
| while read -r line ; do
  IFS=':'
  read -ra ADDR <<< "$line"
  for i in "${ADDR[@]}"; do
      echo $i
  done
  IFS=' '
done \
| grep '^\/' \
| while read -r line ; do
  rm "$line"
  echo $line >> /tmp/file-cleanup.log
done