Hi,

I know this is a really dumb question, and I used to know how to do this, but I forgot and I can't seem to find the command online anywhere:

When I grep a string, how do I filter the results so that lines containing a certain string are OMITTED!

for example:
grep 'string' *.txt
gives:
1. string computer computer computer
2. string face face face


I only want the second line,
I know I can do:
grep 'string' *.txt | grep 'face'

but I would like to be able to do something like:
grep 'string' *.txt | ungrep 'computer'


where 'ungrep' is just my name for the unknown command I'm seeking

Thanks much!

grep "string.*face" *.txt | grep -v computer

grep -E "string|face" *.txt | grep -v computer

or just:

grep 'string' *.txt | grep -v computer

egrep -v "!(string)|computer" *.txt