topic Re: Exit after first 'found' in grep in Operating System - HP-UX

Exit after first 'found' in grep

Aravind_3 — Tue, 24 Sep 2002 04:44:10 GMT

i have a text file
_________________________
syslog file is correct
i am not correct
_________________________

if i do
grep "correct" txt
it will return both the lines,

How do i exit after the first "correct" is grepped ?

Aravind

Re: Exit after first 'found' in grep

Christian Gebhardt — Tue, 24 Sep 2002 05:03:44 GMT

Hi

with awk it's something like this:

awk '/correct/ {print $0;exit}' file

regards
Christian

Re: Exit after first 'found' in grep

Christian Gebhardt — Tue, 24 Sep 2002 05:29:23 GMT

if you like grep try this:
grep correct a | head -1

Christian

Re: Exit after first 'found' in grep

Elif Gius — Tue, 24 Sep 2002 08:51:02 GMT

Hi ,

You can also use:
cat a |grep correct | head -1

Re: Exit after first 'found' in grep

Rodney Hills — Tue, 24 Sep 2002 13:48:43 GMT

If you just want to test if the search text is in the file, then you can use the "-q" option.

if grep -q "correct" txt ; then
echo "correct is in file txt"
else
echo "no correct found!"
fi

"-q" forces grep to stop after the first instance is found.

HTH

-- Rod Hills