If it's a Perl string, the unhelpfully named length function (see perlfunc:length) would do the job. If it's a text file, use the -s filetest, as in 

my $size = -s $filename;

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Philosophy can be made out of anything. Or less -- Jerry A. Fodor

In reply to Re: length of a file by arturo
in thread length of a file by Anonymous Monk

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