This is guide, howto enable Vi and Vim text editor syntax Highlighting on Fedora / CentOS / Red Hat (RHEL). Actually on Fedora, CentOS and Red Hat (RHEL) does only have Vim (Vi IMproved), but if you run vi command it works, because it runs small/minimal version of Vim, which is like original Vi. I have seen too many guides howto enable Vi/Vim syntax highlighting, which says that you can turn syntax highlighting on/off with using :syntax on and :syntax off.