Lets assume my current directory is /Applications and it contains all my apps. Lets say I want to know the bundle identifier for Google Chrome:

$ mdls -raw -name kMDItemCFBundleIdentifier 'Google Chrome.app'

Now let’s use that to locate the app:

$ mdfind kMDItemCFBundleIdentifier = com.google.Chrome
/Applications/Google Chrome.app

Now lets try the same for Tor Browser Bundle. First, get the bundle identifier:

$ mdls -raw -name kMDItemCFBundleIdentifier TorBrowser.app
org.mozilla.tor browser

Then, locate the app:

$ mdfind kMDItemCFBundleIdentifier = org.mozilla.tor browser

Nothing. I likely need to quote it:

$ mdfind kMDItemCFBundleIdentifier = 'org.mozilla.tor browser'

Nope, still nothing. Lets try something else:

$ mdfind kMDItemCFBundleIdentifier = 'org.mozilla.tor'
$ mdfind kMDItemCFBundleIdentifier = "org.mozilla.tor browser"
$ mdfind kMDItemCFBundleIdentifier = org.mozilla.tor\ browser
$ mdfind kMDItemCFBundleIdentifier = "org.mozilla.tor\ browser"
$ mdfind kMDItemCFBundleIdentifier = 'org.mozilla.tor%20browser'
$ mdfind kMDItemCFBundleIdentifier = 'org.mozilla.tor+browser'
$ mdfind kMDItemCFBundleIdentifier = 'org.mozilla.tor_browser'

Nothing works. This is the only app I ever had this issue with, and the only one I ever saw with a space in its bundle identifier. How can we reference it?

  • I can't check it, because I do not have an app with space in bundle identifier, but how about escaping the space with \` ? Or " quotes? Sep 4, 2015 at 17:21
  • Nope. Still nothing.
    – user137369
    Sep 4, 2015 at 17:22

1 Answer 1


A proper bundle identifier should not have a space in it. According to Apple's App Distribution Guide -> About Bundle IDs, a

"...bundle ID string must be a uniform type identifier (UTI) that contains only alphanumeric characters (A-Z,a-z,0-9), hyphen (-), and period (.). The string should be in reverse-DNS format. For example, if your organization’s domain is Acme.com and you create an app named Hello, you could assign the string com.Acme.Hello as your app’s bundle ID.

So, technically, org.mozilla.tor browser is not a valid bundle identifier, so you'll get unexpected results when trying to work with it. It should likely be changed (by the developer) to something like org.mozilla.tor.browser or org.mozilla.tor-browser, etc.

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