Don't modify the Cleanup Script - things in /System are NOT guaranteed to not be deleted or changed by Software Update.

Instead, make your own startup item in /Library/StartupItems

1. Deleting the Web Cache (In Safari): 1. Open Safari on your Mac by finding it from Spotlight Search. Go to Preferences in the Menu Bar. A window with many options like General, Tabs, Security, Passwords etc. Click on the Privacy tab there.
2. To clear cache on macOS Mojave you can easily use third-party software. There are many options but choose CleanMyMac X and there is no doubt that you will be left satisfied. It will locate caches fast and will only delete those that are not vital to the daily functioning of the Mac.

You can delete app cache on Mac in the same way as user cache, by going to /Library/Caches and removing the insides of the folders with the app name. Proceed with caution! Not all app cache can. Delete caches and save disk space Authored by: TigerKR on May 01, '06 09:34:10PM Just for reference, I will reiterate what has already been said about the long-term importance (or lack there of) of files in the /Library/Caches directory. May 31, 2018  How to Delete a Library in Final Cut Pro X. This tutorial is a quick one and it is from a question that I've been getting often: How do you delete a Library.

sudo mkdir /Library/StartupItems/CacheCleaner

You may have to create /Library/StartupItems - I don't remember if OS X ships with an empty one by default or not. If you do have to create it, remember that there is not a space between Startup and Items

Create /Library/StartupItems/CacheCleaner/CacheCleaner with the following contents:

#!/bin/sh
. /etc/rc.common
##
# Start mail server
##
ConsoleMessage 'Cleaning System Cache Files'
rm -fr /System/Library/Caches/*
rm -fr /Library/Caches/*

Don't forget to chmod 755 /Library/StartupItems/CacheCleaner/CacheCleaner or the startup item won't load.

Now create /Library/StartupItems/CacheCleaner/StartupParameters.plist with the following contents:

{
Description = 'Cache Cleaner';
Provides = ('CleanCache');
Requires = ('Cleanup');
Uses = ('Cleanup');
Preference = 'None';
OrderPreference = 'Early';
Messages =
{
start = 'Cleaning System Cache Files';
stop = 'Cleaning System Cache Files';
};
}

This way you don't have to worry about system updates (like Jaguar) trashing your startup item. The line Requires = ('Cleanup'); will tell OS X to run your startup item some time after the standard Cleanup startup item.

Now to clean your personal caches, you're better off using an applescript that launches during login.

Open Script Editor, and put the following lines into a new script:

do shell script 'rm -rf ~/Library/Preferences/Explorer/Download*Cache'
do shell script 'rm -rf ~/Library/Caches/*'
-- Uncomment the next line if you want to nuke your IE History as well
-- do shell script 'rm -rf ~/Library/Preferences/Explorer/History.html'

Can I Delete Library Cache Mac 10

Save the script somewhere, then go into the Login pane of System Preferences and add the new script to your login items.

Mac Library Caches

jpb