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Top Forums Shell Programming and Scripting awk to filter out lines containing unique values in a specified column Post 302932683 by Ditto on Friday 23rd of January 2015 11:15:29 AM
Old 01-23-2015
I was able to do it this way .. no as "slick" as a 1-line awk pilnet posted .. but still works Smilie
might be easier to read, as well? for us rookies, anyway

Code:
for i in `cut -f1 file1`
do
   if grep $i file2 >/dev/null 2>&1
   then
     grep -h $i file?
   fi   
done

 

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ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME
zgrep - search possibly compressed files for a regular expression SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code: (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other 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 the GREP environment variable is set, zgrep uses it as the grep program to be invoked. EXIT CODE
2 - An option that is not supported was specified. AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1) ZGREP(1)
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