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UNIX for Dummies Questions & Answers

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# 1  
Old 06-14-2004
Error Newbie Question
Hi,

I have a file, that is delimited by :: and the purpose of this file is none of your business. Smilie

There are about 65000 lines in this file, and there are lines that I would like to remove. About 45000 of them.

Is there some sort of commands that I can run, to remove word(s) from this file. And everywhere there is the 'word' it remvoes the whole line.

Is this possible?

I need this done, ASAP!

Thanks, th3gh05t
# 2  
Old 06-14-2004
grep -v "unwanted word" "filename.txt"

The -v option causes grep to find all lines not containing the following pattern.
# 3  
Old 06-14-2004
Thanks very much!
# 4  
Old 06-21-2004
Hi,

What if I wanted to do the opposite of this. Anywhere this is "wanted_word" it would take out every line that doesn't have that word.

Thanks, th3gh05t
# 5  
Old 06-21-2004
grep "wanted word" "filename.txt"

This is case sensitive.
 
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