svn incremental backup

Just for archiving. I've got it from somewhere but i'm unable to find it. In order to create mirror repository of one already available somewhere follow these steps: $REPO = where you wan't to keep mirror (local path) $SOMEWHERE = where is your original repo

svnadmin create REPO

Add hook that will disallow of commit by anyone except svnsync fake user:

cat > REPO/hooks/pre-revprop-change

#!/bin/sh
USER="$3"
if [ "$USER" = "svnsync" ]; then exit 0; fi
echo "Only the svnsync user can change revprops" >&2
exit 1
^Z

chmod +x REPO/hooks/pre/revprop-change

Finally initialize mirror:

svnsync --username svnsync initialize file://`pwd`/REPO svn://SOMEWHERE

Now each invocation of:

svnsync sync file://$REPO

synchronizes mirror with master. Sample crontab:

* * * * *        sync-svn-repo $REPO

(which means run sync-svn-repo script with parameter $REPO on start of every minute) sync-svn-repo is simple shell script:

#!/bin/sh
repo=$1
(
    echo "---- synchronizing at `date`"
    /usr/bin/svnsync sync file://$repo
    echo "---- finished: exitcode($?)"

) 2>&1 >> $repo/synch_log.log