GOAL
* search a string using vi
* search and replace a string using vi
1. to search a string in vi
command
/<string> (without < and >)
example, open addr.txt file using vi
command
vi addr.txt
find 'game' string
command
/game
2. to search and replace a string in vi
command
:%s/string/new_string/g
%s means subtitute
example, find 'good' and replace with 'bad'
command
:%s/good/bad/g