I would suggest that the -w flag is a bit outdated, the: 
use warnings;

[download]
pragma is a better way of having the same advantages with a finer control on the effects (lexical scope, possibility to silence some warnings when needed, etc.).

Update; Beaten by a few minutes by GrandFather on this one. Corrected a typo.

In reply to Re^2: Code for generating a word frequency count not working by Laurent_R
in thread Code for generating a word frequency count not working by Pearl12345

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