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Full Discussion: if statement
Top Forums Shell Programming and Scripting if statement Post 302173711 by ilak1008 on Friday 7th of March 2008 03:17:47 PM
Old 03-07-2008
Quote:
Originally Posted by ROOZ
I dunno how I can ask this question. It seems like that I am not expressing my question correctly becuz i am not getting anything related to my question. I am not having problem with searching a string. I don't know how to use that output for if statement. lets say i do GREP STRING FILENAME this would give me either an output or nothing. I want to use this output as a condition to do my if statement but i dunno how to go about using this output. i mean what i have to use in order to[INDENT]get a condition out of this.

lets say we use
If ["$A" lt 0]; then .... but in my case i dunno what exactly i have to use for GREP SRTING FILENAME to see if this actually gives an output or it is NULL

I want something like If( GREP STRING FILENAME give me an output) do the following......

I hope someone has an answer for me
Thanks


Code:
#! /bin/ksh

str='grep 'string' filename | wc -l'
if (($str >= 1)); then
     sed 's/car/bus/g' file
else
     exit 0
fi

Last edited by ilak1008; 03-07-2008 at 04:23 PM.. Reason: Variable
 

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LEARN ABOUT SUSE

bzfgrep

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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