tee to a file descriptor […] 1 $ tee >(cat – >&2) the tee command does fine with file names, but not so much with file descriptors, such as &2. This uses process …

$ some_command > >(/bin/cmd_for_stdout) 2> >(/bin/cmd_for_stderr) You can use [n]> combined with >(cmd) to attach the various output file descriptors to be the input of different …