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Full Discussion: Fastest way to delete line
Top Forums Shell Programming and Scripting Fastest way to delete line Post 302411208 by Scrutinizer on Thursday 8th of April 2010 01:59:44 AM
Old 04-08-2010
Hi, what do you mean with fastest? You can do:
Code:
grep -v TRACE mylog.txt > mylog2.txt

Grep tends to be a bit faster, but grep does provide the option of inline editing like GNU sed does, so you have to mv the file back to the original afterwards.
 

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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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