Date: Thu, 8 Mar 2007 05:31:57 -0800 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: sthomas@nerim.net Cc: freebsd-stable@freebsd.org Subject: Re: Background process Message-ID: <20070308133157.GA96143@icarus.home.lan> In-Reply-To: <52267.194.69.32.50.1173359004.squirrel@webmail.nerim.net> References: <52267.194.69.32.50.1173359004.squirrel@webmail.nerim.net>
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On Thu, Mar 08, 2007 at 02:03:24PM +0100, sthomas@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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