If you're calling the program using the symlink, you can use __FILE__ (or, as the others have suggested, $0). That gives you the name of the program called, and it doesn't matter whether it's a symlink or a real file. If you're calling the program using the real file name, no. A file might have numerous symlinks to it, and it doesn't have any place to keep track of them.
Caution: Contents may have been coded under pressure.

In reply to Re^3: Curious Symlink question by Roy Johnson
in thread Curious Symlink question by patrickrock

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