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Top Forums UNIX for Dummies Questions & Answers Getting non unique lines from concatenated files Post 302509547 by pawannoel on Thursday 31st of March 2011 04:00:13 AM
Old 03-31-2011
Hello Bartus
MorningSmilie Today's question !!
So in your code
Code:
#!/bin/sh
LIST=$1
shift
for i in $*; do
  echo "$i:"
  perl -nase 'BEGIN{open I, "$file";@I=<I>}{print grep {/$F[0]/&&/$F[1]/} @I}' -- -file=$i $LIST
done

What if I didnt know, or didnt want to specify which feilds in file1 containing the pattern I want to grep from other files in the list ? How do I go about that? The reason I'm asking is that in my case, file1 can be in various line formats with patterns to be grepped not always located in $F[0] and $F[1]. In reality I could make different codes for different file1 types, but I was wondering if there is are smarter and efficient way to accomplish such a task! ... Could you please enlighten on this ?
Cheers and have a nice daySmilie
 

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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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