Subj : Re: dosemu
To   : Al
From : tenser
Date : Wed Feb 05 2020 11:46:24

On 04 Feb 2020 at 11:22a, Al pondered and said...
 
 Al> I have eliminated all the chatter when running doors with dosemu by
 Al> ending the dosemu execution line with 2>&1>/dev/null but I still see..

Just a drive-by comment, but that redirection probably isn't
quite what you want.

In particular, when using Bourne-like shells (ksh, bash, dash, zsh,
etc), order of redirection matters.  Redirections are evaluated
left-to-right, so `2>&1>/dev/null` with redirect file descriptor
number 2 (conventionally, "standard error") to whatever file
descriptor 1 (also by convention "standard output") refers to
_at the time of redirection_, and _then_ redirect file descriptor
1 to /dev/null.  Notably after both redirections are processed,
file descriptor 2 will still point to whatever 1 referred to
before 1 was redirected to /dev/null.

In other words, this doesn't redirect both stderr and stdout to
/dev/null.  To do that, you want to do: `>/dev/null2>&1`.

But...what apam said.

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