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Full Discussion: Run shell script as different user
Top Forums UNIX for Advanced & Expert Users Run shell script as different user Post 69898 by mskarica on Thursday 21st of April 2005 11:23:36 AM
Old 04-21-2005
Ok, I think I should rephrase my question. I did some more research on daemons, and I think I can ask my question better now.

A daemon is a process that runs in the background (like a fork), whithout user interaction (from what I read). So basically what happens is that when an email is received, and the shell script is invoked, a daemon is running the entire process. I need to find a way where I can make the daemon act as if it were a unix user so that the process is run as if the user is the one who is invoking the scripts that are called in the main script, rather than the daemon.

So my basic idea is: email is received, forwarded to a script (daemon is still the owner at the moment), in the main script first thing I want to do is change the user from the deamon to another valid unix account, so then everything that is performed from there on out is performed as if the unix user that I specify is the one who invoked everything.

Does that make more sense? Any ideas?

Thanks
Last edited by mskarica; 04-21-2005 at 12:30 PM..
 

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LEARN ABOUT FREEBSD

casperd

CASPERD(8)						    BSD System Manager's Manual 						CASPERD(8)

NAME

     casperd -- Capability Services friendly daemon

SYNOPSIS

     casperd [-Fhv] [-D servconfdir] [-P pidfile] [-S sockpath] [-Fhv] [-D servconfdir] [-P pidfile] [-S sockpath]

DESCRIPTION

     The casperd daemon hosts various services that can be accessed through libcapsicum's capabilities by programs running in sandboxes.  For
     example it is prohibited to send UDP packets to arbitrary destinations when operating in capability mode, which makes DNS resolution impossi-
     ble.  To make it possible the casperd daemon provides the system.dns service that proxies DNS resolution requests through a dedicated, non-
     sandboxed process provided by casperd.

     The casperd daemon can be started with the following command line arguments:

     -D servconfdir  Specify alternative location of the service configuration directory.  The default location is /etc/casper/.

     -F 	     Start the casperd daemon in the foreground.  By default casperd starts in the background.

     -h 	     Print the casperd usage message.

     -P pidfile      Specify alternative location of a file where main process PID will be stored.  The default location is /var/run/casperd.pid.

     -S sockpath     Specify alternative location of the unix(4) domain socket used to connect to the casperd daemon.  The default location is
		     /var/run/casper.

     -v 	     Print or log verbose/debugging information.  This option can be specified multiple times to raise the verbosity level.

FILES

     /etc/casper/	   The configuration directory for casperd services.
     /var/run/casper	   unix(4) domain socket used to connect to the casperd daemon.
     /var/run/casperd.pid  The default location of the casperd PID file.

EXIT STATUS

     The casperd daemon exits 0 on success, and >0 if an error occurs.

SEE ALSO

     cap_enter(2), libcapsicum(3), pidfile(3), capsicum(4), unix(4)

AUTHORS

     The casperd was implemented by Pawel Jakub Dawidek <pawel@dawidek.net> under sponsorship from the FreeBSD Foundation.

BSD
								 October 26, 2013							       BSD
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