Problem purge command from the Terminal

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You can't use purge in 10.8.1, so you must wait until the next maintenance update

Mountain Lion omitted a file that the purge(8) command expects. In the meantime, the purge command still works, despite the terminal message. The missing file will be added in a future OS X or Xcode release.

The missing file is not critical to the normal operation of Mountain Lion.

You're welcome

My suggestion is to do the following as this is a level 3 error so hence is non critical:

1. Open Terminal.app

2. cd /System/Library/PrivateFrameworks/CoreProfile.framework/Versions/A/Resources/De vices/

3. sudo ln -s osx-12.0.0.xml osx-12.1.0.xml

4. Enter password if asked

By adding a soft symbolic link you fool the purge command into believing the newer file exists. This type of link is non-distructive and hence if the file osx-12.1.0.xml will be overwritten if it is installed with a future update.

Use this at your own risk but it does offer a temporary fix. Its hard to say if the issue is fixed in 10.8.2 we will have to wait to find out. The fix has the benefit of preventing the annoying message about rolling back as the roll back will be done behind the scenes using the link.

Yes you are correct unless you have your own scripts which execute 'purge' and which do not expect any message to be returned then this flaw/issue has the potential of breaking said scripts.

Type 'sudo purge', then enter
It will ask for your admin password. Type and press enter again.

That's it!!