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Full Discussion: grep: do multiple searches?
Top Forums UNIX for Dummies Questions & Answers grep: do multiple searches? Post 17413 by sdemba on Thursday 14th of March 2002 06:11:33 PM
Old 03-14-2002
grep: do multiple searches?

I want to search the file /etc/passwd for all lines containing 'csh' but exlude all those lines that have '/usr' in them and dump the results into the file result.

IMPORTANT: I need to do this in one command line.

The following does not work:

grep -v \(\/usr\) \(csh\) /etc/passwd > result

What is the basic thing that I am doing incorrectly here?

do I need do first search for all instances of 'csh' and then direct this into another grep for exclude all instances of '/usr' ??

grep -v '/usr' /etc/passwd | grep csh > result


regards and thanks,

Steve
 

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GZGREP(1)						      General Commands Manual							 GZGREP(1)

NAME
gzgrep, gzegrep, gzfgrep - search possibly compressed files for a regular expression SYNOPSIS
gzgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
gzgrep is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep. If no file is speci- fied, 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 gzgrep is invoked as gzegrep or gzfgrep then egrep or fgrep is used instead of grep. If the GREP environment variable is set, gzgrep uses it as the grep program to be invoked. For example: for sh: GREP=fgrep gzgrep string files for csh: (setenv GREP fgrep; gzgrep string files) AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), egrep(1), fgrep(1), gzdiff(1), gzmore(1), gznew(1), gzforce(1), gzip(1), gzexe(1) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWgzip | +--------------------+-----------------+ |Interface Stability | External | +--------------------+-----------------+ NOTES
Source for gzip is available in the SUNWgzipS package. GZGREP(1)
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