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  1. or download this
    #!/usr/bin/perl                             
    #                                           
    ...
                                                
    print "random samples:\n";                  
    print $$_[1] for sort { $$a[0] <=> $$b[0] }  @samples;
    
  2. or download this
    $ perl -e 'print "$_\n" for 1 .. 1000000' >a_million_lines
    
    ...
    719979
    842687
    998139