CODEWITHSUNDEEP
perl
KLZY
KLZY

Reputation: 83

Is there a way to identify which perl specific options are passed to a script?

I'm aware a script can retrieve all the command line arguments passed to it through ARGV, i.e.:

# test.pl

print "$ARGV[0]\n";
print "$ARGV[1]\n";
print "$ARGV[2]\n";

## perl ./test.pl one two three
one
two
three

In the above example, the command line arguments passed to the test.pl script are "one", "two" and "three".

Now, suppose I run the following command:

## perl -d:DumpTrace test.pl one two three

or

## perl -c test.pl one two three

How can I tell from within the operations of the test.pl script that the options -c or -d:DumpTrace were passed to the perl interpreter?

I'm looking for a method that will identify when options are passed to the perl interpreter during the execution of a script:

if "-c" was used in the execution of `test.pl` script {
    print "perl -c option was used in the execution of this script";
}

Upvotes: 2

Views: 124

Answers (1)

Håkon Hægland
Håkon Hægland

Reputation: 40738

You can use Devel::PL_origargv to get access to to command line parameters that was passed to the perl interpreter. Example script p.pl:

use strict;
use warnings;
use Devel::PL_origargv;
my @PL_origargv = Devel::PL_origargv->get;
print Dumper({args => \@PL_origargv});

Then running the script like this for example:

$ perl -MData::Dumper -I. p.pl
$VAR1 = {
          'args' => [
                      'perl',
                      '-MData::Dumper',
                      '-I.',
                      'p.pl'
                    ]
        };

Upvotes: 5

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