replace specific ip address using sed?

Question

I wan to replace a specific IP to another so say localhost to 0.0.0.0

sed -i -e 's/localhost/0.0.0.0/g' doesn't seem to work

also tried sed -i -e 's/localhost/0\.0\.0\.0/g' doesnt work either

sed: RE error: illegal byte sequence

I have a file with bunch of "localhost" and I want to replace them with "0.0.0.0" — user1870400, May 04 '16 at 23:29
@user1870400 Does your file have a bunch of `localhost` or a bunch of `ip=localhost`? It makes a difference. If you want good answers, you should include a short sample of one of the input files that is causing you trouble. — John1024, May 04 '16 at 23:31
@user1870400 You don't need to escape `.` in replacement. Looks like locale issue. Do `export LC_ALL=C`, hit enter and then try your command again. — jaypal singh, May 04 '16 at 23:42
This looks like an X-Y problem - can you explain why you need to use `sed`? — Toby Speight, May 05 '16 at 12:10

score 1 · Answer 1 · answered May 04 '16 at 23:10

1

Your examples seem to work fine for me. Given the following test.txt

ip=localhost

The following replaces the entire ip=localhost with 0.0.0.0

sed -i -e 's/ip=localhost/0\.0\.0\.0/g' test.txt

If you just want the localhost part replaced:

sed -i -e 's/localhost/0\.0\.0\.0/g' test.txt

will give you the following:

 ip=0.0.0.0

answered May 04 '16 at 23:10

djsumdog

I want to replace every file that has localhost with 0.0.0.0 and it says Sed ERR illegal byte sequence with all of them I tried. find ./ -type f -exec sed -i -e 's/ip=localhost/0\.0\.0\.0/g' {} \; and find ./ -type f -exec sed -i -e 's/localhost/0\.0\.0\.0/g' {} \; – user1870400 May 04 '16 at 23:16
2

Your original question didn't mention the find. You need to include all the relevant information in your question. You can either update your question or start a new one. – djsumdog May 04 '16 at 23:44

1 Answers1