Given an autopkg cache path, will remove any download and pkg items older than X days

autopkg_cache_cleanup.sh

#!/bin/bash

# Script to find and delete .dmg, .pkg, .tar.gz, and .zip files from
# your autopkg cache
# Failed / incomplete downloads (prefixed with tmp) are also removed

# Number of days after which to delete matching files
readonly DAYS_TO_DELETE=7

# Path to autopkg Cache folder for current user
readonly SEARCH_PATH="/Users/${USER}/Library/AutoPkg/Cache"

# List of search terms to exclude from cleanup, separated by spaces
# 
# readonly EXCLUSIONS="Slack Firefox"

# Path to autopkg cleanup log. For CLI use, otherwise comment out
readonly LOG="/Library/Logs/autopkg_cleanup.log"

#######################################
# Output errors with timestamp to STDERR
# Globals:
#   CLEANUP_LIST
#   DAYS_TO_DELETE
#   SEARCH_PATH
#   EXCLUSIONS
# Arguments:
#   None
# Outputs:
#   None
#######################################
get_files_to_clean() {
    CLEANUP_LIST="$(/usr/bin/find ${SEARCH_PATH} \( -iname "*.pkg" -o -iname "*.dmg" -o -iname "*.zip" -o -iname "tmp*" -o -iname "*.tar.gz" \) -mtime +${DAYS_TO_DELETE} -maxdepth 5 -print | sort)"
    # Remove any excluded items from the list
    for i in $EXCLUSIONS; do
        CLEANUP_LIST=$(echo "$CLEANUP_LIST" | grep -v ${i})
    done
}

#######################################
# Output results
# Globals:
#   CLEANUP_LIST
#   DAYS_TO_DELETE
# Arguments:
#   None
# Outputs:
#   Prints & writes to log if no files found older
#   than specified DAYS_TO_DELETE, or prints & writes
#   all found files to clean and indicates if it failed
#######################################
clean_files() {
    # Output results
    if [ -z "$CLEANUP_LIST" ]; then
        # Indicate no files found to delete
        writelog "No files found to clean older than ${DAYS_TO_DELETE} days."
    else
        # Indicate found files to delete
        writelog "Files found to clean older than ${DAYS_TO_DELETE} days:"
        for i in ${CLEANUP_LIST}; do
        	writelog "${i}"
        done

        # Remove found files and output any failures
        for f in $CLEANUP_LIST; do
            writelog "Removing $(basename ${f}...)"
            /bin/rm -f "$f" || writelog "Failed to remove ${f}."
        done
    fi
}

start_run() {
    writelog "####### START $(/bin/date +'%Y-%m-%d') #######"
}

end_run() {
    writelog "####### END $(/bin/date +'%Y-%m-%d') #######"
}

writelog() {
    # For LaunchDaemon use
    #echo "$(/bin/date +'%Y-%m-%dT%H:%M:%S') - $*" #>&1
    # For CLI use
    echo "$(/bin/date +'%Y-%m-%dT%H:%M:%S') - $*" >> "$LOG"
}

main() {
    start_run
    get_files_to_clean
    clean_files
    end_run
}

main "@"