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Top Forums Shell Programming and Scripting Grep: a better way to temporarily disable colors? Post 302968258 by Don Cragun on Monday 7th of March 2016 03:51:49 AM
Old 03-07-2016
Maybe you should ask a different question. Why are you defining options to be applied to every invocation of grep you make in your .bashrc file if you don't want those options to be applied every time you invoke grep?

Have you considered defining an alias for grep that includes the options you want to apply only when grep is invoked interactively?
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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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