I guess my favorite would have to be

kill

hehe

im big on using everything on the command line. one thing I hate is when you come into a shop that's say, running webservers and the webservers have X installed and running on them without having a monitor or keyboard there too. idiotic waste of resources.

grep
svn
ping
dig
****sudo****
dmesg
tail
cat
etc, etc etc etc

My company uses RHEL because they like having the support to fall back on even if I've never used it.

In other companies that I've worked, they use software purchased that is only certified on RHEL, and if you called for support as to why it broke this time and told them you were running CentOS, they would say, oh, it's not certified to run on that OS.

That could be one situation where you would want RHEL.

Based on what you wrote, you're trying to start a program on your local machine and have a program window show up on a remote computer. In order to do that, you have to allow external X11 connections on your remote system, you can use

on remote shell:> xhost + (will allow all hosts to connect)
or remote shell:> xhost (name of local system, must resolve correctly)

then on your local system, run

local shell:> export DISPLAY=`who am i | sed 's/.*(\(.*\)).*/\1/'`

after this, you should be able to run

local shell:> xterm

and it should pop up on your remote system.