Maybe this would work for you:

         $ nohup dsmc sched >/dev/null 2>&1 </dev/null &


> ----------
> From:         Grendelman M.
> (Martijn)[SMTP:Martijn.Grendelman AT NL.FORTIS DOT COM]
> Reply To:     ADSM: Dist Stor Manager
> Sent:         Wednesday, December 16, 1998 9:06 AM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      Problems starting client scheduler on AIX
> 
> Hi,
> 
> When I try to start the client scheduler by issuing
> 
>      $ nohup dsmc sched 2>/dev/null &
> 
> on an AIX machine, I sometimes get the following behaviour: after a couple
> of seconds, the process stops:
> 
>      [1] + Stopped (SIGTTOU)        nohup dsmc sched 2>/dev/null &
> 
> and it won't let me exit my shell without killing the process. Issuing
> 
>      bg ; exit
> 
> works, but the scheduler doesn´t seem to accept any commands from the
> central scheduler.
> 
> I have had this problem on AIX 4.1.5 (with the proper client) and on AIX
> 4.3.1 (with the 4.2 client code). Has anyone experienced the same
> problems? 
> 
> Thanx,
> Martijn.
> 
> P.S. SIGTTOU means a "background write attempted from control terminal",
> but
> that's as far as my knowledge goes. Maybe some AIX wizard can tell me what
> that means in plain English? ;-)
>