how to omit certain lines while using "wc -l"

pixellany · 12-18-2008, 08:14 PM

Hmmmmmm...

From the man page:

Quote:

-P, --perl-regexp
Interpret PATTERN as a Perl regular expression. This is highly
experimental and grep -P may warn of unimplemented features.

Sergei Steshenko · 12-18-2008, 08:25 PM

Quote:

Originally Posted by pixellany

Hmmmmmm...

From the man page:

I used it a lot. I had a problem one time on pretty ancient RHEL4, and that problem wasn't present on my home much newer SUSE.

Anyway, there is 'pcregrep' :-).

ghostdog74 · 12-18-2008, 09:23 PM

Quote:

Originally Posted by pixellany

egrep -v '(delayed|finish)' textfile.txt | wc -l

AFAIK, OP wanted to exclude "delayed" AND "finish" , the alternation operator is an "OR" function.

@OP, use awk

Code:

awk '!/delay/ && !/finish/' file

taylor_venable · 12-18-2008, 09:36 PM

Quote:

Originally Posted by ghostdog74

AFAIK, OP wanted to exclude "delayed" AND "finish" , the alternation operator is an "OR" function.

DeMorgan's Law

-v means to invert the matching, so -v (X | Y) == !X & !Y

bigearsbilly · 12-19-2008, 03:15 AM

egrep -v '(delayed|finished|blah|blooh)'

or words in a list file:

grep -vf list infile

Telemachos · 12-19-2008, 04:27 AM

And, one more time, since I think it's gotten lost in the pile: add a -c flag and leave out wc -l:

Code:

grep -vc 'delayed\|finished' filename