Simple script to delete pacman package files older than some period, printing the freed space

clear-pacman-cache

#!/bin/bash

CACHE_PATH=/var/cache/pacman/pkg
PRESERVE_MONTHS=3


DELETED_SIZE=$(/usr/bin/find . ! -newermt "$PRESERVE_MONTHS months ago" -ls | awk -F' ' 'BEGIN {sum=0} {sum+=$7} END {print sum}' | numfmt --to=iec-i)B

/usr/bin/echo "Deleting $DELETED_SIZE of package files older than $PRESERVE_MONTHS months..."
/usr/bin/find $CACHE_PATH ! -newermt  "$PRESERVE_MONTHS months ago" -delete