I'm very new to Linux and I read the thread about defrag, which made me think about older outdated files/kernels in the linux system (which happens due to upgrades or whatever).
My question is how do you find and delete/unistall old versions of software and kernels, is there software for this...I know for win"dough"s the uninstall sucks and doesn't delete everthing, or is linux a manual process?
I know I read somewhere that when you boot, at the top of the screen you may see two kernels listed (when you upgrade your kernel). The thread then went on as to how to correct that issue (if that's what it really is). OR does linux get rid of the old files/kernels when you upgrade?
I have a lot of questions running through my head right now so hopefully that makes some sense to someone.


Thanks

JC

The answer is... dun dun dun dah... it depends! I know, really useful. Some distros package managers will clean up all the old files for you. Others will only remove explicitly what you say unless you pass it some options to remove all unused files. Some distros will delete the old kernel when you upgrade using their package manager but not when you compile your own. In Debian, there are tools like deborphan to help find packages that aren't used by anything else. Then you can safely remove them. As for other file types, I'm not sure (I think deborphan also checks the default config files in /etc).

You can use your package manager to delete the outdated kernels which you don't want in your boot menu.