The subversion source control system replaces certain keywords like $Id$ with some very useful metadata, if and only if the file in question is configured to do so. Normally, file properties are added automatically to subversion at the time the file is added. Unless..., unless there was a mistake. Mistakes happen.
Unfortunately, subversion is not very keen to discover and fix such inconsistencies. That's why I came up with this one-liner:
find . -name .svn -prune -o -type f | while read f; do if egrep -q '\$Id|\$HeadURL' $f; then test "$(svn pget svn:keywords $f)" = "Id HeadURL" || echo $f; fi ; done
This finds all files that contain the $Id$ or $HeadURL$ keywords anywhere in the text, and at the same time do not have the svn:keywords property set to "Id HeadURL".
You might be using other subversion keywords: just change the regexp and the property string accordingly.
This helped me a lot, lately, and I thought I wanted to share it.
