Hello Monks, Often wondered what is the difference between the two special values $0 and __FILE__ in a Perl script. But always brushed it off saying "Perl has many ways to do anything". But, today, I saw some code containing: 
unless ($0 eq __FILE__) .....

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That sets me thinking, what exactly is the difference between the two. Can they be different? When?

In reply to Difference between $0 and __FILE__ by solegaonkar

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