Hup Post: 3879

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Top Forums UNIX for Dummies Questions & Answers Hup Post 3879 by LivinFree on Thursday 12th of July 2001 09:46:08 PM

07-12-2001

Registered User

Well, that was only an example. Regardless, will signal 1 (HUP) always cause a process to restart, or only in some cases? I was under the impression that it killed your processes when you logged out, thus the "nohup" utility for keeping your jobs running upon logout.

For example, if I telnet to nether.net, sign in, and run "mail", it tracks my processes. Say my session is dropped, or I close my session from my end. Isn't the HUP signal sent to "mail" to kill it, as opposed to TERM(15), or INT(2)?

I know that to restart, say, inetd, for example I can kill -1 it, but not all programs follow this convention. Is that correct?

LivinFree

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LEARN ABOUT DEBIAN

svc

svc(8)							      System Manager's Manual							    svc(8)

NAME

       svc - controls services monitored by supervise(8).

SYNOPSIS

       svc [ -udopchaitkx ] services

DESCRIPTION

       services consists of any number of arguments, each argument naming a directory used by supervise(8).

       svc applies all the options to each service in turn.

OPTIONS

       -u     Up. If the service is not running, start it. If the service stops, restart it.

       -d     Down. If the service is running, send it a TERM signal and then a CONT signal. After it stops, do not restart it.

       -o     Once. If the service is not running, start it. Do not restart it if it stops.

       -p     Pause. Send the service a STOP signal.

       -c     Continue. Send the service a CONT signal.

       -h     Hangup. Send the service a HUP signal.

       -a     Alarm. Send the service an ALRM signal.

       -i     Interrupt. Send the service an INT signal.

       -t     Terminate. Send the service a TERM signal.

       -k     Kill. Send the service a KILL signal.

       -x     Exit.   supervise(8)  will  exit	as  soon as the service is down. If you use this option on a stable system, you're doing something
	      wrong; supervise(8) is designed to run forever.

SEE ALSO

       supervise(8), svok(8), svstat(8), svscanboot(8), svscan(8), readproctitle(8), fghack(8),  pgrphack(8),  multilog(8),  tai64n(8),  tai64nlo-
       cal(8), setuidgid(8), envuidgid(8), envdir(8), softlimit(8), setlock(8)

       http://cr.yp.to/daemontools.html

																	    svc(8)