vi/vim is a good tool to edit the files
vi/vim is a good tool to edit the files for sys admin and programmer.
I don’t mean to offend the emacs guys. just my opinion. 🙂
if you want to learn and have any questions, just use this link.
so you don’t need to search on the internet.
http://vimdoc.sourceforge.net/
the pdf is good book for the new learner.
http://www.truth.sk/vim/vimbook-OPL.pdf