I have a post-commit hook that is updating a working copy. In that working copy some of the files are externals witch have authentication. Is there a way to pass the login credentials to the svn update only for the externals ?
Right now it does the update but because the external asks for login, it fails to update the external library.
No, not separately.
One way of getting the credentials available to the Subversion client is to log in as that user, say with sudo or su, and manually do a checkout from all the web sites into /tmp so they get stored. Then the client running during the post-commit should work.