Searching in vim with ignorecase on

This is for searching any string in vi or vim, regardless of the case. All you need to do is to press

/\c

while you are in vim followed by your pattern to start this ignore case search. For example, if you  have a list like below:

Miu
MIu
MiU
mIU

and search in vim using

/\cmiu

, vi will list every line as the search output, even though the cases are different. try it :)