He can use warn or print STDERR to prevent that.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^3: tracing system calls a perl script is making by BrowserUk
in thread tracing system calls a perl script is making by gideondsouza

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