When you have a question about a function built into Perl, reading the documentation that comes with Perl for that function usually helps.

> perldoc -f print

Prints a string or a list of strings. Returns true if
successful. ...

[download]

So, if the print function does not return a true value, an error happened. Also see perlvar on $!.

In reply to Re: Detecting write errors (disk full, bad media) by Corion
in thread Detecting write errors (disk full, bad media) by Nyyr

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