How to save SED result in target file?

Asked Sep 15 '15 at 11:08

Active Sep 15 '15 at 11:08

Viewed 85 times

I want to insert specific line (XXX) in specific place (new line after b) in example.txt. When I do:

$ sed '/b/a XXX' example.txt
a
b
XXX
c

It seems to work, but the original remains file unchanged.

$ cat example.txt 
a
b
c

How to change example.txt by SED permanently ?

asked Sep 15 '15 at 11:08

okt

1

use -i flag ( in-place ). the default substitutions are directed only to stdout ( so things are rerunnable ) – amdixon Sep 15 '15 at 11:09
It's worth mentioning that even though OP specified `linux` as his platform it doesn't imply that his `sed` version supports `-i`. It's not specified in [POSIX](http://pubs.opengroup.org/onlinepubs/009604599/utilities/sed.html). – Arkadiusz Drabczyk Sep 15 '15 at 11:16
http://stackoverflow.com/q/12696125/1030675 – choroba Sep 15 '15 at 11:16
@choroba that works too - happy to un-hammer if you think it's more appropriate – Tom Fenech Sep 15 '15 at 11:18
@TomFenech: Never mind, these two are almost duplicates, too :) – choroba Sep 15 '15 at 11:18

0 Answers0