:help substitute Substitute allows you to search and replace using regular expressions. The command
s/find/replace/g will replace “find” with “replace”, the
s is for substitute, the
g (global) option replaces every occurrence in a line, without the
g it will only replace the first occurrence in a line.
Prefix the command with the range to work on, if no range is specified it will only search and replace on the current line.
The space between range and
s is not necessary, but I find it more legible.
% to search and replace across the whole document.
Specify a line number range using
:137,140 s/find/replace/g will replace all “find” with “replace” between lines 137 and 140.
You can define a range using VISUAL mode. First, highlight the area you want and then type
: to go into command-line mode. Vim will automatically insert
'<,'> this is it’s magical incantation to operate over the selection, leave it there. Next, type your substitute command
Besides search and replace, you can use
g/find/d to delete all lines that match find, or
v/find/d to delete all lines that do not match find.