Monitoring Tomcat with Munin on Debian GNU/Linux

To monitor Tomcat with Munin 2.0 on Debian GNU/Linux (tested on Debian Squeeze with Tomcat6 and Debian Backports), you need the following steps.

First, you need to install package tomcat6-admin which enables the Tomcat Manager app we will be using.

# apt-get install tomcat6-admin

Next, create a user with a manager role in Tomcat, editing /etc/tomcat6/tomcat-users.xml and adding the following two lines in the appropriate list.

HOWTO Use gThumb to rename pictures in Ubuntu 10.10 (Maverick)

I'm used to gThumb to rename lots of pictures from camera's filename to something including the date, hour taken and a sequence number, like this one: 2011-02-27--16.24.51_007.JPG. Basically, simply select pictures you want to rename and press F2 (or Edit->Rename). Previous to version 2.11, gThumb was using a vastly simpler syntax expression for renaming (they name it Template in the Rename dialog).