4 ms·

Does: sort < foo | uniq -u not work with named pipes?

• dllthomas 13y ago
  It works fine. The advantage to cat foo | sort | uniq -u is that it is (marginally) easier to drop in another filter in front of sort.
  • knz42 13y ago
    This argument is less strong in the face of: <foo sort | uniq -u (redirections can be at the beginning too.) Also: sort -u instead of sort|uniq.
    • dllthomas 13y ago
      It's still a reason to disprefer the form that was given. I don't see any reason to prefer the cat version over yours, except habits, though. That said, there's only weak reason to avoid the cat.
  • jl6 13y ago
    It is also simpler, in the sense that it presents a left-to-right order that visually illustrates the pipeline, without the incongruous left-facing angle bracket.