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Of course, but its primary purpose (combining files) differs from its primary usage (showing a file’s content).

• joombaga 8y ago
  The primary usage us just a special case of its primary purpose. You're concatenating the file with nothing.
  • h1d 8y ago
    I never concatenated a file using cat.
  • hk__2 8y ago
    If it’s a special case then is it really its primary purpose? :)