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  1. or download this
    $ echo 'some text' > 1.pdb
    $ echo 'some more text' > 2.pdb
    
  2. or download this
    $ cat foo.pl
    #!/usr/bin/perl
    ...
        print "Content of $file is $content\n";
    
    }
    
  3. or download this
    $ perl foo.pl
    Content of 1.pdb is some text
    Content of 2.pdb is some more text