topic grep command in Operating System - HP-UX

grep command

Chern Jian Leaw — Wed, 21 Aug 2002 09:47:02 GMT

HI,

Is there a way exclude several patterns all at once from a file?

I have the a file of the form:
#cat fileA
FILE OWNER SIZE
--------------------
f1 ken 17
f2 john 17
f3 peter 17

I would like to ignore lines beginning with FILE and with the pattern "------", simultaneously

I tried the followiu:
#grep -v "FILE" "--" fileA > temp
grep: 0652-033 Cannot open --.

#grep -vv "FILE" "--" fileA > temp
grep: 0652-033 Cannot open --.

#grep -v "FILE" -v "--" fileA > temp
grep: 0652-033 Cannot open --.

could someone show me how I could exclude several patterns from different lines in a file, simultenously i.e in 1 command?

Thanks.

Re: grep command

Justo Exposito — Wed, 21 Aug 2002 09:49:45 GMT

Hi,

Try this:

grep -v -e "FILE" -e "--" fileA > temp

Regards,

Justo.

Re: grep command

RAC_1 — Wed, 21 Aug 2002 09:50:37 GMT

grep -Ev "FILE|---" your_file

Re: grep command

Frank Slootweg — Wed, 21 Aug 2002 09:51:01 GMT

grep -v -e '^FILE' -e '^----' fileA >temp

Instead of multiple "-e" options, you can also put the patterns in a file and use that file "-f pattern_file".

Re: grep command

Ollie R — Wed, 21 Aug 2002 09:51:04 GMT

Hi,
You need to use the following:
grep -v -e '' -e ''

Cheers,

Ollie.

Re: grep command

Frank Slootweg — Wed, 21 Aug 2002 09:52:41 GMT

Four responses in two minutes, not bad! :-)

[No points for this one please.]

Re: grep command

Ollie R — Wed, 21 Aug 2002 09:54:07 GMT

No points??? Meany! 8Ob

Re: grep command

Frank Slootweg — Wed, 21 Aug 2002 09:58:43 GMT

I meant no points for the response in which I said that, i.e. my 10:52 AM one.

Of course the other responses, including mine :-), deserve points.

[No points for *T*H*I*S* response please! :-)]

Re: grep command

Robin Wakefield — Wed, 21 Aug 2002 10:06:55 GMT

...or even:

Create a file containing your ignore strings, e.g.

fileA.ignore contains:
FILE
----

then:

grep -v -f fileA.ignore fileA

Rgds, Robin.

Re: grep command

Chern Jian Leaw — Wed, 21 Aug 2002 10:23:52 GMT

robin,

I tried what you've suggested. But the pattern is fileA is still not ignored.

#cat pattern
FILE
------

#grep -v pattern fileA > temp

The file temp still contains patterns beginning with FILE and ---

Could you show me how I could have such patterns included into the file?

Thanks.

Re: grep command

Pete Randall — Wed, 21 Aug 2002 11:32:01 GMT

Robin's answer should work - I think you left out the "-f" that should have appeared before "pattern".

Pete

Re: grep command

John Dvorchak — Thu, 22 Aug 2002 15:49:51 GMT

Or you could simply use:

egrep -v 'FILE|---' fileA

good luck