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pipe both, stdout and stderr in the fish shell

I know this has been an issue for a while and I found a lot of discussion about it, however I didn't get which would be finally a way to get it done: pipe both, stdout and stderr. In bash, this would be simply:

cmd 2>&1 | cmd2
Solution

  • That syntax works in fish too. A demo:

    $ function cmd1
      echo "this is stdout"
      echo "this is stderr" >&2
  end

$ function cmd2
      rev
  end

$ cmd1 | cmd2
this is stderr
tuodts si siht

$ cmd1 &| cmd2
rredts si siht
tuodts si siht

    Docs: https://fishshell.com/docs/current/language.html#redirects