CleanMacCache

#!/bin/bash
# Clean Mac logs and caches

set -u

DRY_RUN=0
ASSUME_YES=0
for arg in "$@"; do
    case "$arg" in
        -n|--dry-run) DRY_RUN=1 ;;
        -y|--yes) ASSUME_YES=1 ;;
        -h|--help)
            echo "usage: CleanMacCache [-n|--dry-run] [-y|--yes]"
            exit 0
            ;;
        *)
            echo "unknown argument: $arg" >&2
            exit 2
            ;;
    esac
done

# Every removal goes through here so dry-run cannot be bypassed by adding a line below.
run() {
    if [ "$DRY_RUN" -eq 1 ]; then
        echo "  would run: $*"
    else
        "$@"
    fi
}

if [ "$DRY_RUN" -eq 0 ] && [ "$ASSUME_YES" -eq 0 ]; then
    cat <<'WARN'
This deletes user and system caches and logs, including /var/log and
/private/var/folders. Deleted logs are not recoverable, and clearing
/private/var/folders while applications are running can destabilise them
until you reboot. Re-run with --dry-run to see the commands first.
WARN
    printf 'Continue? [y/N] '
    read -r reply
    case "$reply" in
        [yY]|[yY][eE][sS]) ;;
        *) echo "Aborted."; exit 1 ;;
    esac
fi

#user cache file
echo "cleaning user cache file from ~/Library/Caches"
run rm -rf ~/Library/Caches/*

#user logs
echo "cleaning user log file from ~/Library/Logs"
run rm -rf ~/Library/Logs/*

#system caches
echo "cleaning system caches"
run sudo rm -rf /Library/Caches/*

#system logs
echo "cleaning system logs from /Library/Logs"
run sudo rm -rf /Library/Logs/*
echo "cleaning system logs from /var/log"
run sudo rm -rf /var/log/*
echo "cleaning from /private/var/folders"
run sudo rm -rf /private/var/folders/*

#ios photo caches
echo "cleaning ios photo caches"
run rm -rf ~/Pictures/iPhoto\ Library/iPod\ Photo\ Cache/*

#application caches
echo "cleaning application caches"
for x in ~/Library/Containers/*/; do
    echo "cleaning ${x}Data/Library/Caches/"
    run rm -rf "${x}Data/Library/Caches/"*
done

# Cleaning up brew cache
echo "cleaning brew cache"
run brew cleanup

echo
echo "Cache cleanup process completed"