Greetings, Monks.

I was recently turned on to perl -s as a way to parse command line options (please, I dont want to know about any more command line options modules, its way overkill).

So, without further ado, from perldoc perlrun: 

       -s   enables rudimentary switch parsing for switches on
            the command line after the program name but before
            any filename arguments (or before a --).  Any switch
            found there is removed from @ARGV and sets the
            corresponding variable in the Perl program.  The
            following program prints "1" if the program is
            invoked with a -xyz switch, and "abc" if it is
            invoked with -xyz=abc.

                #!/usr/bin/perl -s
                if ($xyz) { print "$xyz\n" }

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So I am taken to understanding that I can then use an option from the command line to have $xyz (or $switch, as used in the example below) defined.

Here's a relevant example: 

#!/usr/bin/perl -ws
# minus-ess.pl

use strict;

# if we run it ./minus-ess.pl -switch "foo" it should be defined. 
my $switch = "hooray" unless (defined $switch);

print $switch;

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which yields us: 

Global symbol "$switch" requires explicit package name at minus-ess.pl
+ line 7.

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I guess then what I need to do is "turn off" strict while I am parsing the command-line options. My idea was to use an anonymous code block ( { ... } ) turn off strict in there, and then just close it.

thanks,
dep.
--
i am not cool enough to have a signature.

In reply to Using perl's runtime options with -Mstrict by deprecated

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