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  1. or download this
    open RAM, '>', \$ram; 
seek RAM, 10, 0; 
print RAM ' '; 
print length $ram;;
12
  2. or download this
    open RAM, '>', \$ram; 
binmode RAM, ':raw' or warn $!; 
seek RAM, 10, 0; print RAM ' '; 
print length $ram;;
12
  3. or download this
    open RAM, '>:raw', \$ram; 
seek RAM, 10, 0; 
...
print length $ram;;
Use of uninitialized value in length at (eval 3) line 1.
0