How can I access a Getopt::Long option's value in the option's sub?...

java gnu getopt - how to make it case insensitive?...

Mandatory options with getopt_long() in C...

Perhaps a pointer problem. Linux program + libpcap + getopt_long() + C language...

Is it possible to move backwards through a getopt_long argument list?...

Can Perl's Getopt::Long parse arguments I don't define ahead of time?...

Where does getopt_long store an unrecognized option?...

Why does my Perl program print the help message when an arguments has 0 as a value?...

Get optarg as a C++ string object...

How can I override hard-coded configuration in my Perl program?...