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Test Your Knowledge in Computers #1001
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Grace Brewster Murray Hopper was an American computer scientist and United States Navy rear admiral who found a moth in a computer stuck in a relay in 1947 and was later referred to as "Grandma COBOL" for her pioneering work in machine-independent programming languages.
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rhn_check(8) [centos man page]

RHN_CHECK(8)							   Red Hat, Inc.						      RHN_CHECK(8)

NAME
rhn_check - Check for and execute queued actions on RHN. SYNOPSIS
rhn_check [options] DESCRIPTION
rhn_check is a client program that connects to "Spacewalk Server", "Red Hat Satellite" or "Red Hat Network Classic" and receives queued actions for this particular system. After receiving the actions, rhn_check will then process them, and return the results to Spacewalk. OPTIONS
-v, --verbose Increase the debugging output. --proxy=PROXY Specify an http proxy to use. --proxyUser=PROXYUSER Specify a username to use for an authenticated proxy. This option must be used in conjunction with proxyPassword. --proxyPassword=PROXYPASSWORD Specify a password to use for an authenticated proxy. This option must be used in conjunction with proxyUser. --version Show the program's version number and exit. -h, --help Show a help message and exit. FILES
/etc/sysconfig/rhn/systemid The digital server ID for this machine if the system has been registered onto "Spacewalk Server", "Red Hat Satellite" or "Red Hat Network Classic". This file does not exist otherwise. /etc/sysconfig/rhn/up2date The common configuration file used by RHN client programs. SEE ALSO
rhn_register(8), rhnreg_ks(8), rhnsd(8), rhn-profile-sync(8), rhnplugin(8), up2date(5). AUTHORS
See the AUTHORS file included with this software. This manual page was written by James Bowes <jbowes@redhat.com> BUGS
Report bugs to <http://bugzilla.redhat.com>. COPYRIGHT
Copyright (C) 1999-2010 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 PARTICU- LAR PURPOSE. Linux 2010 August 30 RHN_CHECK(8)

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SPACEWALK-CHANNEL(8)						   Red Hat, Inc.					      SPACEWALK-CHANNEL(8)

NAME
spacewalk-channel - Subscribe to or unsubscribe system from channel. SYNOPSIS
spacewalk-channel [options] DESCRIPTION
spacewalk-channel allows you to subscribe to and unsubscribe from specified channels via the command line. A visit to the "Spacewalk Server", "Red Hat Satellite" or "Red Hat Network Classic" website isn't required. OPTIONS
-l, --list Print a list of channel(s) that you are currently subscribed to. -b, --base Print a base channel that you are currently subscribed to. -L, --available-channels Print a list of all available child channels. -a, --add You are subscribing system to given channel(s). You have to specify --user and --password. -r, --remove You are unsubscribing system to given channel(s). You have to specify --user and --password. -u, --user Your username used to register the system with and for Red Hat Network Classic, Red Hat Satellite or Spacewalk. If you do not enter this option and it is required, you will be prompted. -p, --password The password associated with the username specified with the --user option. This is an unencrypted password. If you do not enter this option and it is required, you will be prompted. -c, --channel Label of channel you want to subscribe to or unsubscribe from. Can be specified multiple times. -v, --verbose Print out successfull action. -h, --help Show a help message and exit. NOTE
The addition and removal of channels is mutually exclusive, please use the command twice. EXAMPLES
Subscribe to two channels: spacewalk-channel --add -c rhn-tools-rhel-i386-server-5 -c rhel-i386-server-vt-5 --user username --password password Unsubscribe from channel: spacewalk-channel --remove -c rhn-tools-rhel-i386-server-5 -c rhel-i386-server-vt-5 --user username --password password List subscribed channels: spacewalk-channel --list SEE ALSO
rhnplugin(8), rhn_register(8), up2date(5). AUTHORS
Miroslav Suchy <msuchy@redhat.com> BUGS
Report bugs to <http://bugzilla.redhat.com>. COPYRIGHT
Copyright (C) 2009-2010 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 PARTICU- LAR PURPOSE. Linux 2010 August 30 SPACEWALK-CHANNEL(8)

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