To search in Vim just press (apple-f for macvim) / then search string.

/search

This will highlight all occurrences of ‘search’, to clear the highlighting enter:

:let @/ = ""

To search and replace the first occurrence on this line only:

:s/search/replace/

Lines 1 to 10 all instance per line (thats the /g global):

:1,10 s/search/replace/g

All Lines All instances

:%s/search/replace/g

[Originals source][src]
[Stack overflow vim clear question][clear] [src]: http://www.linux.com/learn/tutorials/8255-vim-tips-the-basics-of-search-and-replace [clear]: http://stackoverflow.com/questions/657447/vim-clear-last-search-highlighting