Here's a solution that works with require and use. Assuming it's saved in mod.pm 
print "I'm a ".($INC{"mod.pm"} ? "module" : "script")."\n";

[download]
output is 
fergal@linux:~> perl mod.pm
I'm a script
fergal@linux:~ perl -e 'require mod'
I'm a module

In reply to Re: Dual personality: Module and script by fergal
in thread Dual personality: Module and script by Anonymous Monk

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