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Call perl script with a variable

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Join Date: Dec 2007

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Reputation: yair7190 is an unknown quantity at this point

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yair7190

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Call perl script with a variable

Nov 21st, 2008

Although it sounds pretty simple, i haven't found a proper answer for this issue.

I want to know how can i call a perl script and pass a variable to it.
For example, lets say "Parse.pl" is a parsing script of some sort and i want to call it from another perl script, or from a command line, with a variable: Parse($line);
Parse.pl will get the variable $line, perform parsing on it and return it to the main script (the return part is not really important);

Any idea how its done?

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Join Date: Jan 2006

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katharnakh katharnakh is offline

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Re: Call perl script with a variable

Nov 25th, 2008

Hi,
I would recommend you to define a method in Parse.pl and use it in your client script which requires parsing. For eg.

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#caller.pl
require 'Parse.pl';
#...
# call method parse_me(for eg.) in Parse.pl
my $return_val = Parse::parse_me($line);
#...

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#Parse.pl
sub parse_me{
my $line = @_;
#...
}
1;

Note: In Parse.pl define only methods, because when you require something, perl will try to execute that script first and then subsequent lines following require line.

hope this helps.

katharnakh.

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Join Date: Jun 2008

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GDICommander GDICommander is offline

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Re: Call perl script with a variable

Feb 6th, 2009

You can use Getopt. Here is the link:

http://perldoc.perl.org/Getopt/Long.html

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Join Date: Feb 2009

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bryansmith123 bryansmith123 is offline

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Re: Call perl script with a variable

Feb 20th, 2009

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Originally Posted by yair7190

Although it sounds pretty simple, i haven't found a proper answer for this issue.

I want to know how can i call a perl script and pass a variable to it.
For example, lets say "Parse.pl" is a parsing script of some sort and i want to call it from another perl script, or from a command line, with a variable: Parse($line);
Parse.pl will get the variable $line, perform parsing on it and return it to the main script (the return part is not really important);

Any idea how its done?

If you execute your script at ~>Parse.pl a b c
you get the command line values in the @ARGV array which you can run through in a loop.

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