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vroom We don't bite newbies here... much  Comment on   open3
only takes STDIN, STDOUT and STDERR. If the command being run
uses other file descriptors then open3 cannot capture those:
echo foo # Can be captured echo foo >&2 # Can be captured echo
foo >&3 # Cannot be captured (with open3) I have looked into
IPC::Run::run which seems to be able to deal with that, but I
also need the PID and I found no way for IPC::Run::run to give
me that. Also IPC::Run is not installed on many of the old
distributions supported by GNU Parallel, whereas open3 is.  How
can I wrap open3 so that I can capture file descriptors 3..61 in
the same way I can capture STDOUT and STDERR?   This is intended
for a possible extension of GNU Parallel, so you can do:  #
Currently mixes output due to fd 3 not buffered parallel 'echo
{} start >&3;sleep 10;echo {} end >&3' ::: a b c 3> +out.file
without having the output from different jobs mixed. Right now
only STDOUT and STDERR are