topic Re: grep and AWK in Operating System - HP-UX

grep and AWK

Chern Jian Leaw — Wed, 14 Aug 2002 15:02:34 GMT

HI
I have the file attached in this message. I would like to read the file contents. I would like to extract the entire record of the disk-names ($1 ) having the pattern wmtpe, as of:
/fs35/wmtpe211
/fs35/wmtpe212
/fs35/wmtpe213

from the file attached, and place them into another file.
I would like to have the following types of record in file_A with pattern wmtpe:
/fs35/wmtpe212 wmt 16.8516 2.6224
/fs35/wmtpe213 wmt 13.6721 6.5676
/fs35/wmtpe214 wmt 16.8516 11.4333

and the other disk-names without the pattern wmtpe to be in file_B:
/fs36/nwdv.apv.bctl wmt 17.890 6.7809
/fs36/nwdv.shark.bctl wmt 18.978 5.4678

I tried the following:
for i in `cat fileName`
do
grep -v wmtpe >> temp_file
done

I'm not sure how I could extract the disk names with pattern wmtpe with its entire record, and place them into a file_A, and have the remaining disk-name entries, with its entire records into file_B.

Could someone please help me out?

Thanks.

Re: grep and AWK

Tom Maloy — Wed, 14 Aug 2002 15:14:33 GMT

To match the pattern, use "grep". To match every BUT the pattern, use "grep -v". The "-v" inverts the match.

grep wmtpe filename > file_A
grep -v wmtpe filename > file_B

Tom

Re: grep and AWK

Sridhar Bhaskarla — Wed, 14 Aug 2002 15:19:24 GMT

grep "wmtpe" this_file >> file_A

grep -v "wmtpe" this_file >> file_b

Did I misunderstand your message?.

-Sri

Re: grep and AWK

S.K. Chan — Wed, 14 Aug 2002 15:26:09 GMT

You just have to be more specific with your grep statement. For example ..

$ grep \^/fs[1-9]*[0-9]/wmtpe fileName > file_A

..will match for all lines that begins with "/fs9>/wmtpe".

$ grep \^/fs[1-9]*[0-9]/nwdv fileName > file_B

..same explaination here except for "nwdv" in place of "wmtpe".