topic Re: Grep qustion in Operating System - HP-UX

Grep qustion

Manuel_8 — Mon, 13 Jan 2003 15:14:29 GMT

Hello guys,
I have a file whit 3 names inside, mmarano smmarano mmarano1.
I must find only mmarano, not smmarano and mmarano1.
I use grep to serch, but I see all the names, I try whit grep "^mmarano$", but this command not function.
I'm sure that somebody can help me.....I hope.

Thenks

Manuel

Re: Grep qustion

Hai Nguyen_1 — Mon, 13 Jan 2003 15:05:11 GMT

Manuel,

James F.'s method should work.

Hai

Re: Grep qustion

James R. Ferguson — Mon, 13 Jan 2003 15:11:52 GMT

Hi (again) Manuel:

This is clearer:

# grep mmarano filename| grep -v smmarano|grep -v mmarano1

That is, is your file. No assumptions are made as to where one any line(s) the tokens appear.

The 'grep -x mmarano' form suggested above and the regular expression ^mmarano$ accomplish the same thing -- they assume that the entire input line matches the string or regular expression.

Regards!

...JRF...

Re: Grep qustion

Robert-Jan Goossens — Mon, 13 Jan 2003 15:18:18 GMT

Hi Manuel,

# grep mmarano file
ore
# cat file | grep mmarano

Robert-Jan.

Re: Grep qustion

H.Merijn Brand (procura — Mon, 13 Jan 2003 15:18:22 GMT

1. Look at if the different regex exploitation of egrep can help
2. use word bounds in regex engines that support it (why do I always think in perlish styles ? :)

# perl -ne'/\bmmarano\b/ or print' datafile

Re: Grep qustion

Scott_130 — Mon, 13 Jan 2003 15:18:52 GMT

Give this a try

cat | grep '^mmarino$'

Re: Grep qustion

Pete Randall — Mon, 13 Jan 2003 15:19:12 GMT

Manuel,

Try grep -x mmarano.

Pete

Re: Grep qustion

John Meissner — Mon, 13 Jan 2003 15:19:38 GMT

funny - when I try the same thing it works perfectly for me

Re: Grep qustion

John Meissner — Mon, 13 Jan 2003 15:21:16 GMT

Oh I see - are you just typing grep "^mmarano$"...
no i was typing cat file | grep "^mmarano$"
that works for me.

Re: Grep qustion

Pete Randall — Mon, 13 Jan 2003 15:24:04 GMT

John,

Me, too.

Pete

Re: Grep qustion

James R. Ferguson — Mon, 13 Jan 2003 15:25:09 GMT

Hi:

Here's one simple way"

# cat /tmp/grep|grep mmarano|grep -v smmarano|grep -v mmarano1

Regards!

...JRF...

Re: Grep qustion

H.Merijn Brand (procura — Mon, 13 Jan 2003 15:28:40 GMT

The easiest way (of course) is to use GNU grep with the -w option:

-w, --word-regexp force PATTERN to match only whole words

# grep -w mmarano infile

Re: Grep qustion

harry d brown jr — Mon, 13 Jan 2003 15:45:51 GMT

grep -e "^mmarano$" -e " mmarano$" -e "^mmarano " -e " mmarano "

live free or die
harry

Re: Grep qustion

Jose Mosquera — Mon, 13 Jan 2003 15:50:00 GMT

Hi,

Use -x (eXact) option, this Matches are recognized only when the entire input line matches the fixed string or regular expression.

grep -x mmarano file

Of course, to do this between "mmarano" must exist al least blank spaces that limit the name like a one word.

I've tried with "grep ^mmarano file" and works fine!

If you have an inmediate charater delimiting mmarano name, you will use it into the match string, i.e. if you have a ":" character after "mmarano" string, you can specify exactly by: "grep mmarano: file"

Rgds.

Re: Grep qustion

Chia-Wei — Tue, 14 Jan 2003 05:01:31 GMT

grep " mmarano"