\$file); : Getopt « System Functions « Perl "/> \$file); : Getopt « System Functions « Perl "/>

GetOptions("file=s" => \$file); : Getopt « System Functions « Perl

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Perl » System Functions » Getopt

GetOptions("file=s" => \$file);


      





use Getopt::Long;



GetOptions("file=s"  => \$file);



if ($file) {

    print "File name: $file\n";

}

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6.	Read from a file
7.	To turn a feature on or off. Use the exclamation point(!)
8.	Using Getopt to deal with command line options
9.	getopt('pMN');
10.	If the value is optional, use a colon
11.	For a text string value, use :s for an optional value or =s for a required value:
12.	Check if a file exists
13.	A double dash (--) by itself signals the end of the command-line switches.

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