I installed a program on my linux machine, and need to uninstall it. What command would I use to do this?

if you used pkg-tool to install it you can use the same tool to uninstall it, if you installed by compiling from source, well .. you are in more luck if you have a source tree available and the developer was nice enough to include uninstall target in Makefile- so in such a case run
make uninstall
in the source tree directory for this program;
Another case can be a hurdle to overcome if there is no uninstall or similar target - if the prog is simple enough removing its executable is sufficient; OTOH, if the prog is complex and it scattered files among different dirs then you've left with a choice either hunt every file it installed and modified, or just leave it as is removing only executable(s).

Well... I needed to uninstall it so that I can install it again. I needed to put in a serial key and mistyped. That negated the whole prog for some damn reason and now I can reput in the key. So Im just gonna wype it gone and redo it. Uninstall in the sourcer tree?!? wtf is that? I had to install this way:

./INSTALL.sh

the other files in the directory are just configs and readmes