xlogmaster 1.6.0-12.1 (i386 binary) in ubuntu intrepid

 Xlogmaster can monitor an almost infinite number of logfiles and all
 devices that can be read via "cat" like the /proc ones.
 On a regular expression base, you can hide, raise or lower lines in the
 logfile and set triggers, which can launch scripts or pop-up a window
 .
 xlogmaster homepage is at
 http://www.gnu.org/software/xlogmaster/xlogmaster.html