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Top Forums Shell Programming and Scripting Check numeric fields greater than zero, and delete lines if appropriate Post 302370343 by radoulov on Wednesday 11th of November 2009 06:21:31 AM
Old 11-11-2009
Quote:
Originally Posted by Yorkie99
[...]
I'm doing this on ubuntu... (may or may not be relevant)
On the contrary, it's quite relevant:

Code:
grep -EB1 '[^0] (CRC|overrun)' infile

 

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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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