grep Matching anything except pattern

[Paul Sperry]

Hi all,

I have a bunch of email lists that I need to find out which one have external addresses.
I have used grep to find file pattern matches but never to find ones that don't match. I did a man grep but didn't see any ideas. How can I use find/grep to to find all files that contain addresses other than @mydomain.com

TIA
Paul

[spex · Accepted solution]

Explore grep's '-v' option.

[A. Clay Stephenson]

When you did a "man grep", you didn't look hard enough. Use the -v option which lists all lines except those matching the pattern.

[James R. Ferguson]

Hi Paul:

The '-v' switch of 'grep' negates a match. That is, 'grep -v' finds everything that does NOT match:

Compare :

# grep local /etc/hosts

...with:

# grep -v local /etc/hosts

Regards!

...JRF...

[Shrikant Lavhate]

Yes,
grep -v
will do the required.

[Paul Sperry]

Silly me I passed the -v option assuming it was as usual verbos. Thanks guys/gals your the best. Bunnies for all!!

[Paul Sperry]

Thanks Again