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  1. or download this
    #!perl -T
    print 42;
    
  2. or download this
    C:\Users\burak\Desktop>perl foo.pl
    "-T" is on the #! line, it must also be used on the command line at fo
    +o.pl line 1.
    
    C:\Users\burak\Desktop>
    
  3. or download this
    C:\Users\burak\Desktop>perl -T foo.pl
    42
    C:\Users\burak\Desktop>