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Perl in a Nutshell

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Standard Modules
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config

Getopt::Long::config(optionlist)

Sets the variables in optionlist to change the default behavior of GetOptions. The following options are available:

$Getopt::Long::autoabbrev

If true, option names can be invoked with unique abbreviations. Default is 1 (true) unless the environment variable POSIXLY_CORRECT has been set.

$Getopt::Long::getopt_compat

If true, options can start with "+". Default is 1 unless the environment variable POSIXLY_CORRECT has been set.

$Getopt::Long::order

Value indicates whether options and non-options may be mixed on the command line:

$PERMUTE

Non-options may be mixed with options. The default if POSIXLY_CORRECT is not set.

$REQUIRE_ORDER

Mixing is not allowed. The default if POSIXLY_CORRECT is set.

$Getopt::Long::ignorecase

If true, ignore case when matching options. Default is 1.

$Getopt::Long::VERSION

The version number of this Getopt::Long implementation in the format major.minor.

$Getopt::Long::error

Internal error flag. May be incremented from a callback routine to cause options-parsing to fail.

$Getopt::Long::debug

If true, enables debugging output. Default is 0 (false).


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