An improved shell script for Svn resetting

A few weeks ago I posted a simple script for resetting an Svn repository to an earlier revision (and recording it as a new revision, so the reset is resettable!).

I decided it was totally shit, and so, I have simplified it a little bit:

You no longer have to pass in the URL for the central repository. The script will figure it out for you.
The working copy (second) argument is optional. It defaults to the current directory.

Anyway, here it is:

if [ $# = 0 ]
then
  echo "Resets an Svn working copy to an earlier revision."
  echo "svnreset <revision> [PATH...]"
else
  dir=$2
  : ${dir:="."}

  # Find repository URL using AWK.
  repo_url=`svn info $dir | awk '/^URL: (.+)$/ { print $2 }'`

  # Update working copy, merge into older revision, commit with message.
  svn update $dir
  svn merge -rHEAD:$1 $repo_url
  svn commit -m "Reverted back to r$1"
fi

exit 0

Call it like this (with an appropriate revision number): $ svnreset 1242

$ cat /home/buntine/mind_melting_brilliance

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An improved shell script for Svn resetting