SVN pre-commit hook for avoiding changes to tags subdirectories

Question

Is there anybody who has clear instructions on how to add a pre-commit hook that avoids changes to tags subdirectories?

I already searched the internet quite a bit.

Answer 1

Here is a short shell script to prevent committing to tags after they have been created:

#!/bin/sh

REPOS="$1"
TXN="$2"

SVNLOOK=/usr/bin/svnlook

# Committing to tags is not allowed
$SVNLOOK changed -t "$TXN" "$REPOS" | grep "^U\W*tags" && /bin/echo "Cannot commit to tags!" 1>&2 && exit 1

# All checks passed, so allow the commit.
exit 0

Save this at hooks/pre-commit for your Subversion repository and make it executable with chmod +x.