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Full Discussion: To have a numeric result from grep
Top Forums UNIX for Dummies Questions & Answers To have a numeric result from grep Post 302083593 by blowtorch on Monday 7th of August 2006 07:26:22 AM
Old 08-07-2006
You don't have to worry about converting the result into 0 for found and 1 otherwise. The shell takes care of this for you.
Check the status like this:
Code:
grep 'Checking Subscription Status' ranos.log > /dev/null
if [ $? -eq 0 ]; then
   echo success!
else
   echo failure!!
fi

All commands have a return code that is returned to the sh/ksh/bash family of shells as the variable $? (grep will return 0 if it finds what it is looking for). You can just run the return code via an if, and get your result.
 

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LEARN ABOUT LINUX

zegrep

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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