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Full Discussion: How to assign the Pattern Search string as Input Variable
Top Forums Shell Programming and Scripting How to assign the Pattern Search string as Input Variable Post 302394318 by radoulov on Thursday 11th of February 2010 05:51:18 AM
Old 02-11-2010
Quote:
Originally Posted by raghunsi
[...]

Basically I want script to read the /ect/hosts file & should match the pattern or else it should throw out " Invalid Request '
You can try something dirty like this:

Code:
fgrep "$1" /etc/hosts > /dev/null || {
  echo Invalid Request
  exit 1
  }

If your grep implementation supports the -q switch you don't have to redirect stdout. With POSIX implementation you could use -F instead of fgrep.
You could use a regex and be much more specific.
 

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LEARN ABOUT SUSE

bzgrep

BZGREP(1)						      General Commands Manual							 BZGREP(1)

NAME

       bzgrep, bzfgrep, bzegrep - search possibly bzip2 compressed files for a regular expression

SYNOPSIS

       bzgrep [ grep_options ] [ -e ] pattern filename...
       bzegrep [ egrep_options ] [ -e ] pattern filename...
       bzfgrep [ fgrep_options ] [ -e ] pattern filename...

DESCRIPTION

       Bzgrep  is  used to invoke the grep on bzip2-compressed files. All 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  bzgrep  is  invoked as bzegrep or bzfgrep then egrep or fgrep is used instead of grep.  If the GREP environment variable is set, bzgrep
       uses it as the grep program to be invoked. For example:

	   for sh:  GREP=fgrep	bzgrep string files
	   for csh: (setenv GREP fgrep; bzgrep string files)

AUTHOR

       Charles Levert (charles@comm.polymtl.ca). Adapted to bzip2 by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.

SEE ALSO

       grep(1), egrep(1), fgrep(1), bzdiff(1), bzmore(1), bzless(1), bzip2(1)

																	 BZGREP(1)
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