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26 lines
758 B
Perl
26 lines
758 B
Perl
use Getopt::Std;
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Getopt::Std::getopts( 'a:b:de' );
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This call sets up five command-line switches: a, b, d, and e.
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The colons after a, b tell getopts that a, b require values.
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d, and e are called Boolean switches.
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Boolean switches are either set or not.
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For example, the following sets a Boolean switch:
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command -d
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The following sets a switch with a value:
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command -a value
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With the Getopt::Std module, the getopts routine sets variables starting with opt_ for each option that is set. For example, the -a switch corresponds to the $opt_a variable. Thus, you can use the following code to look for a -a switch:
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use Getopt::Std;
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Getopt::Std::getopts( 'a' );
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if ( defined( $opt_a ) ) {
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print "-a flag set to $opt_a\n";
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}
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