On slide 6 this line: 
open SELF, "< $0" or die ...;

[download]
Should be: 
open SELF, "+< $0" or die ...;

[download]
Due to the fact that some OS's won't allow an exclusive lock on a file that has been opened for read only.

-Nitrox

In reply to Re: File Locking Tricks and Traps by Nitrox
in thread File Locking Tricks and Traps by Dominus

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