in reply to Create matrix and save to a file
First I would check out some tutorials on Input and Output. Once you understand basic filehandles and how to read/create files then manipulating the data is fairly straightforward.
s;;5776?12321=10609$d=9409:12100$xx;;s;(\d*);push @_,$1;eg;map{print chr(sqrt($_))."\n"} @_;
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