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  1. or download this
    $ perl -E 'say "Args (@ARGV): ", 0+@ARGV' A B C
Args (A B C): 3
  2. or download this
    $ perl -E 'say "Args (@ARGV): ", 0+@ARGV' #A B C
Args (): 0
  3. or download this
    $ perl -E 'say "Args (@ARGV): ", 0+@ARGV' \#A B C
Args (#A B C): 3