snap -- FreeBSD UFS2 Snapshot Management Tool
You can use the snap utility to periodically create new snapshots while rotating the olds.
Sample configuration files: snap.conf crontab
ChangeLog:2009/02/05: v1.01 fix: # of weekly snapshots was referred to daily limit, now fixed
2008/12/19: write this webpage and update manpage in v1.0.
2007/05/15: 1.0 release
2007/05/07: 0.9 release
Old versions:snap-0.9 (previously named as snap-20070507)