a simple loop Post: 302474654

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Top Forums Shell Programming and Scripting a simple loop Post 302474654 by bartsimpsong on Wednesday 24th of November 2010 11:43:49 PM

11-25-2010

Registered User

a simple loop

Does any body can help me with a loop in this example?

Code:

if [ "$i" -eq 1 -a "$#" -ge 1 ]
then
    if [ "$#" -ne 1 ]
       then
        runner=$(grep "$1" "$2")
    runne=$(grep "$1" "$3")
        run=$(grep "$1" "$4")
    fi
fi

#                                                                                
# Message on screen or mail or both                                              
#                                                                                

if [ "$mailopt" = FALSE ]
    then
      echo "*****************************"
      echo "$2:$runner"
      echo "$3:$runne"
      echo "$4:$run"
      echo "*****************************"
    else
      echo "You have mail!"
      run=$(whoami | cut -c1-8)
      echo "pattern $1 found in file $2:\                                        
            $runner" | mail $run
fi

Instead of specifying $1 $2 $3 with different variables (runner, runne, run). Can you guys help me to change it with a loop so it accepts several files and the output would show the pattern dog in different files
Just what grep does (grep dog file1 file2 file3).
file1: cat dog house
file2: dog cat house
file3: house dog cat
Thanks I just cannot find out how to make that little detail. Thanks.

Last edited by Scott; 11-25-2010 at 03:10 AM.. Reason: Added code tags

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plack::runner

Plack::Runner(3pm)					User Contributed Perl Documentation					Plack::Runner(3pm)

NAME

       Plack::Runner - plackup core

SYNOPSIS

	 # Your bootstrap script
	 use Plack::Runner;
	 my $app = sub { ... };

	 my $runner = Plack::Runner->new;
	 $runner->parse_options(@ARGV);
	 $runner->run($app);

DESCRIPTION

       Plack::Runner is the core of plackup runner script. You can create your own frontend to run your application or framework, munge command
       line options and pass that to "run" method of this class.

       "run" method does exactly the same thing as the plackup script does, but one notable addition is that you can pass a PSGI application code
       reference directly to the method, rather than via ".psgi" file path or with "-e" switch. This would be useful if you want to make an
       installable PSGI application.

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NOTES

       Do not directly call this module from your ".psgi", since that makes your PSGI application unnecessarily depend on plackup and won't run
       other backends like Plack::Handler::Apache2 or mod_psgi.

       If you really want to make your ".psgi" runnable as a standalone script, you can do this:

	 my $app = sub { ... };

	 unless (caller) {
	     require Plack::Runner;
	     my $runner = Plack::Runner->new;
	     $runner->parse_options(@ARGV);
	     return $runner->run($app);
	 }

	 return $app;

       WARNING: this section used to recommend "if (__FILE__ eq $0)" but it's known to be broken since Plack 0.9971, since $0 is now always set to
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SEE ALSO

       plackup

perl v5.14.2							    2012-03-21							Plack::Runner(3pm)