$0 and __FILE__ are subtly different. $0 will only ever contain the name of the program that is running. If the program calls code in other files (modules, for example) then __FILE__ will have different values.

These values are documented in the section on "Special Literals" in perldata.

--
<http://dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg

In reply to Re^4: At which line number did the print statement occure? by davorg
in thread At which line number did the print statement occure? by jeanluca

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