Background process

Attos attos.janus at gmail.com
Thu Mar 8 14:30:12 UTC 2007


Look into sysutils/screen
There are several tutorial on how to use it.

On 3/8/07, Jeremy Chadwick <koitsu at freebsd.org> wrote:
> On Thu, Mar 08, 2007 at 02:03:24PM +0100, sthomas at nerim.net wrote:
> > Hello,
> >
> > I connect to my freebsd box via ssh using putty from a WindowsXP
> > workstation, I want to run a process on the freebsd box, then close my ssh
> > session (closing putty) while keeping the process running.
> >
> > So I run my process like this : # myprogram &, then I exit the shell.
> >
> > But when I do that, I can see with ps that my process go from "TT" "p0" to
> > "TT" "p0-" and the application doesn't work anymore. For information, the
> > program I want to be able to run via ssh then close the ssh session is the
> > moinmoin wiki which is a wiki written in python.
> >
> > In man ps I can see that the trailing "-" after "p0" means my process can
> > no longer reach the controlling terminal... But what can I do to achieve
> > my goal ?
>
> The program you're using obviously needs a tty/pty open for it to
> function.  Possibly it's trying to output to stdout or stderr and
> cannot due to tty/pty being taken out underneathe it.
>
> Other *IX people here can give you some alternate advice, but I'd
> recommend these options:
>
> 1) Under sh/bash: myprogram 1>/dev/null 2>&1 &
>    (or replace /dev/null with a logfile of your choice)
>
> 2) Use dtach (ports/misc/dtach) and detach your program.
>    http://dtach.sourceforge.net/
>
> 3) Use GNU screen (ports/sysutils/screen) and run your program
>    within that.
>    http://www.gnu.org/software/screen/
>
> --
> | Jeremy Chadwick                                 jdc at parodius.com |
> | Parodius Networking                        http://www.parodius.com/ |
> | UNIX Systems Administrator                   Mountain View, CA, USA |
> | Making life hard for others since 1977.               PGP: 4BD6C0CB |
>
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-- 
Attos Janus


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