Vi and Vim
Importance of Vi
Usually the text editor we can throw on a boot disk. It’s very light weight, very small in terms of memory size.
You can actually make command line arguments from within Vi, like cerating a directory.
Vi vs Vim
Vim is the improved version of Vi. In most distributions Vi has been replaced by Vim. Vim is backwards-compatible with Vi.
Changing modes =
yank = copy