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Top Forums UNIX for Dummies Questions & Answers Grep from pattern file without removing duplicates? Post 302899465 by RavinderSingh13 on Tuesday 29th of April 2014 10:09:32 AM
Old 04-29-2014
Hello,

Following may help you.

Code:
awk 'NR==FNR{a[$2]=$0;next} ($0 in a){print a[$0]}'  fileB fileA

Ouptut will be as follows.

Code:
NODE_0  fig|562.2322.peg.1     peg
NODE_0  fig|562.2322.peg.3     peg
NODE_0  fig|562.2322.peg.3     peg
NODE_0  fig|562.2322.peg.3     peg
NODE_0  fig|562.2322.peg.7     peg



thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
 

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BZGREP(1)						      General Commands Manual							 BZGREP(1)

NAME
bzgrep, bzfgrep, bzegrep - search possibly bzip2 compressed files for a regular expression SYNOPSIS
bzgrep [ grep_options ] [ -e ] pattern filename... bzegrep [ egrep_options ] [ -e ] pattern filename... bzfgrep [ fgrep_options ] [ -e ] pattern filename... DESCRIPTION
Bzgrep is used to invoke the grep on bzip2-compressed files. All options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep. If bzgrep is invoked as bzegrep or bzfgrep then egrep or fgrep is used instead of grep. If the GREP environment variable is set, bzgrep uses it as the grep program to be invoked. For example: for sh: GREP=fgrep bzgrep string files for csh: (setenv GREP fgrep; bzgrep string files) AUTHOR
Charles Levert (charles@comm.polymtl.ca). Adapted to bzip2 by Philippe Troin <phil@fifi.org> for Debian GNU/Linux. SEE ALSO
grep(1), egrep(1), fgrep(1), bzdiff(1), bzmore(1), bzless(1), bzip2(1) BZGREP(1)
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