Your Dropbox Folder, or Any Folder You’re Already Syncing Now that you’ve seen what Time Machine excludes by default, let’s take a look at some of the other items you might consider excluding to free up some space. What Other Items Should I Consider Excluding? And a big thanks to Brant Bobby on Stack Exchange for pointing out the commands that prove this. To summarize, though, you don’t need to worry about stopping Time Machine from backing up caches or your Trash folder, because it already knows not to. You can find a list of these exempt files by running the following command in the Terminal: sudo mdfind "com_apple_backup_excludeItem = ''"
Typically, this includes caches and other temporary files.
Individual programs can also mark particular files to not be backed up. The list is too long to include here, so you should just check it out yourself. You can quickly open that file by running the following command in the Terminal (which you can find at Applications > Utilities > Terminal): /System/Library/CoreServices/backupd.bundle/Contents/Resources/ist You can find that file in the following location: /System/Library/CoreServices/backupd.bundle/Contents/Resources/ But if you’re interested in seeing the complete list of folders excluded by default (or just want to prove to yourself that something is excluded), here’s how to do it.Ī file named “ist” outlines everything that Time Machine excludes. If just knowing that system-level stuff is already excluded is enough for you, go ahead and skip the rest of this section. So you don’t need to worry about excluding system-level things like logs and caches-Time Machine already has you covered. And you know how you can use Time Machine even if your drive isn’t plugged in? The local backups that make that possible are also not backed up, as that would be redundant. Time Machine already excludes a bunch of things you don’t need backed up: your Trash, caches, and indexes. RELATED: PSA: You Can Use Time Machine Even If Your Backup Drive Isn't Plugged In What Does Time Machine Exclude By Default? But which folders can be safely disabled? And are any disabled by the system already? Let’s take a look. Some more options will slide down, giving you the ability to exclude particular folders from your backups. To exclude a folder, just head to System Preferences > Time Machine > Options. We’ve shown you how to back up and restore files with Time Machine, including how to exclude particular folders from being backed up.
RELATED: How to Back Up Your Mac and Restore Files With Time Machine Are you getting notifications about a full Time Machine drive? Do you feel like your backups are taking too long? A bigger, faster hard drive might be the best solution, but you can also help by excluding particular folders from your backups.
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