That's the Heredoc syntax (as interpreted by your shell in thiscase, not perl). It simply writes the data to the standard input so you can read it with <STDIN> (the magical <> will try to use the parameters as the name of files to read from, unless you shift from @ARGV).

In reply to Re: use of << on comand line by Eily
in thread use of << on comand line by cweeble

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