rhnsd Linux Service

rhnsd service:

Queries the Red Hat Network for updates and information.
It is only used in Redhat server.
Now lets see the manual of rhnsd service.
Manual rhnsd:
NAME
rhnsd - a program for querying the Red Hat Network for updates and information
SYNOPSIS
rhnsd [OPTION]...
DESCRIPTION
rhnsd is a background daemon process that periodically polls the Red Hat Network to see if there are any queued actions available. If any are queued, rhnsd will execute those actions.
rhnsd is typically started from the initialization (init) scripts in /etc/init.d/rhnsd when it's time to poll the Red Hat Network servers for available updates and actions. The default interval is every 240 minutes. The minimum polling interval is 60 minutes.
To check for updates, rhnsd runs an external program called rhn_check. This is a small application that actually makes the network connection to Red Hat Networks.
The rhnsd daemon does not listen on any network ports, nor does it ever talk to the network directly. Any network activity is done via the rhn_check utility.
rhnsd can be configured by editing the /etc/sysconfig/rhn/rhnsd configuration file. This is actually the configuration file the rhnsd initialization script /etc/init.d/rhnsd uses.
-i, --interval
Specify the interval that rhnsd should wait between checking the Red Hat Network. Default is 240 minutes, the minimum is 60 minutes. This can also be specified in /etc/sysconfig/rhn/rhnsd
-v, --verbose
output more information about what rhnsd is doing.
-f, --foreground
force the rhnsd process to run in the foreground instead of automatically backgrounding itself, as it does by default.
FILES
/etc/sysconfig/rhn/rhnsd
Configuration settings for the rhnsd daemon's initialization script.
/usr/sbin/rhn_check
The external program launched by rhnsd to connect to the Red Hat Network and retrieve any actions that have queued up.
/etc/sysconfig/rhn/systemid
A certification that authenticates the client machine to the Red Hat Network. Generated via the up2date or rhnreg_ks utilities.
SEE ALSO
The rhnsd daemon is tightly coupled with Red Hat Network. Visit <http://www.redhat.com/network> for access or to sign up.
rhn_check(8), up2date(8), up2date-config(8),
AUTHORS
Written by Preston Brown <pbrown@redhat.com>,
Cristian Gafton <gafton@redhat.com>, and
Adrian Likins <alikins@redhat.com>
REPORTING BUGS
Report bugs to <http://bugzilla.redhat.com>.
COPYRIGHT
Copyright © 1999, 2000 Red Hat, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.