
since

like tail(1) with state - allows the user to view only
the lines appended to a log file since the last time
since was used.

read INSTALL for installation instructions. 

since is released under the terms of the GNU public 
license. Click accept now... errr... sorry... just
look at COPYING

since was hacked in half a day. So unlikely to be 
bugfree. But it works for me.
