die "The number is not valid\n" if $number =~ /\n/; ??

die "The number is not valid\n" if $number =~ /^\s*\n/; ??

Update:

Looks like Perlbotics was busy proof reading a few responses - thanx to him for pointing out that the RE as I posted would invalidate all text - amended accordingly.

A user level that continues to overstate my experience :-))

In reply to Re: die on carriage return by Bloodnok
in thread die on carriage return by muizelaar

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