ow do I find and replace (substitute) test using vi or vim text editor under UNIX / Linux / BSD or Apple OS X operating systems?
Both vi and vim text editor comes with substitute command for finding and replacing text.
Syntax
The syntax is as follows:
:%s/WORD-To-Find-HERE/Replace-Word-Here/g
OR
:%s/FindMe/ReplaceME/g
Examples
The substitute command can be used as per your requirements.
Task: VI / Vim Basic Find and Replace
To find each occurrence of ‘UNIX’, and replace it with ‘Linux’, enter (press ESC, type : and following command):
:%s/UNIX/Linux/g
Task: Find and Replace with Confirmation
Find a word called ‘UNIX’ and replace with ‘Linux’, but ask for confirmation first, enter:
:%s/UNIX/Linux/gc
Task: Find and Replace Whole Word Only
Find whole words exactly matching ‘UNIX’ to ‘Linux’; and ask for confirmation too:
:%s/\<UNIX\>/Linux/gc
Task: Case Insensitive Find and Replace
Find ‘UNIX’ (match UNIX, unix, UnIx, Unix and so on) and replace with ‘Linux’:
:%s/unix/Linux/gi
Same command with confirmation:
:%s/unix/Linux/gic
Task: Case sensitive Find and Replace
Find each ‘UNIX’ and replace with ‘bar’:
:%s/UNIX/bar/gI
Same command with confirmation:
:%s/UNIX/bar/gIc
How Do I Replace In the Current Line Only?
Find ‘UNIX’ and replace with ‘Linux’ in the current line only (note % is removed from substitute command):
:s/UNIX/Linux/g
NOTE: You need to prefix % the substitute command to make changes on all lines:
:%s/UNIX/Linux/g
How Do I Replace All Lines Between line 100 and line 250?
:{START-n},{END-n}s/word1/word2/g
Find ‘UNIX’ and replace with ‘Linux’ all lines between line 100 and line 250, enter:
:100,200s/UNIX/Linux/g
OR
:100,200s/UNIX/Linux/gc
How Do I Replace text path?
:%s/\/scripts\/shri\/adcontrol.php/\/scripts\/shri\/control.php/g