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Top Forums Shell Programming and Scripting pipe search pattern into a grep Post 302635151 by guessingo on Friday 4th of May 2012 10:16:20 AM
Old 05-04-2012
thanks, but I don't quite follow the syntax

Code:
comm -13 tmpfile tmpfile2 | grep -vf- filename > newfile

-vf-

what is vf?

why do you have a '-' after the f? I have never seen that in unix before with any function.

---------- Post updated at 10:16 AM ---------- Previous update was at 10:07 AM ----------

corona,

can i do this with a pipe with awk or sed or something else? so i dont create files? I can create them, just trying to figure out better ways to do things.
 

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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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