how to update a single file in svn to a specific version

I got this from this link:

http://stackoverflow.com/questions/814433/how-do-i-return-to-an-older-version-of-our-code-in-subversion

The standard way of using merge to undo the entire check-in works great, if that’s what you want to do. Sometimes, though, all you want to do is revert a single file. There’s no legitimate way to do that, but there is a hack:

  1. Find the version that you want using svn log.
  2. Use svn’s export subcommand:

    svn export http://url-to-your-file@123 /tmp/filename

(Where 123 is the revision number for a good version of the file.) Then either move or copy that single file to overwrite the old one. Check in the modified file and you are done.

 

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