The [:print:] is a character class matching printable characters. See Character Classes and other Special Escapes for more about character classes. So the statement replaces all non-printable characters with periods.

@_=qw;
Just another Perl hacker,;
;$_=q=print
"@_"= and eval;

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In reply to Re^3: Problems with converting raw data to text by bv
in thread Problems with converting raw data to text by anderam

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