The substitute command can be used to insert (or replace) text. Some examples:
:s/^/new text / Insert "new text " at the beginning of the line.
:s/$/ new text/ Append " new text" to the end of the line.
:s/green/bright &/g Replace each "green" with "bright green" in the line.
By default, each command operates on the current line. If you visually select some text before entering the command, it will operate on each line in the visual selection. See Search and replace for details.
Or you can insert a range immediately after the colon, for instance :.-5,$s/ etc. to substitute from 5 lines above the cursor to the end of the file.
:s/^/test / ----insert "test" at the beginning of each line.
:%s/^/test / --- insert "test" at the end of each line .
:s/^/new text / Insert "new text " at the beginning of the line.
:s/$/ new text/ Append " new text" to the end of the line.
:s/green/bright &/g Replace each "green" with "bright green" in the line.
By default, each command operates on the current line. If you visually select some text before entering the command, it will operate on each line in the visual selection. See Search and replace for details.
Or you can insert a range immediately after the colon, for instance :.-5,$s/ etc. to substitute from 5 lines above the cursor to the end of the file.
:s/^/test / ----insert "test" at the beginning of each line.
:%s/^/test / --- insert "test" at the end of each line .