04-24-2008
awk has associative arrays - the key for the mail array is field #3 ($3).
The first time $3 shows up the value of mail[$3] is zero, mail[$3]++ increments that array element to one. The next time $3 is found to have a value of 1. It does not print.
!mail[$3] only evaluates true when mail[$3] == 0, so when it is 1, 2 ,3 ... it evaluates as false.
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LEARN ABOUT DEBIAN
rhnreg_ks
RHNREG_KS(8) Red Hat, Inc. RHNREG_KS(8)
NAME
rhnreg_ks - A program for non interactively registering systems to RHN Satellite or Red Hat Network Classic.
SYNOPSIS
rhnreg_ks [options]
DESCRIPTION
rhnreg_ks is a utility for registering a system with the RHN Satellite or Red Hat Network Classic. It is designed to be used in a non-
interactive environment (a kickstart style install, for example). All the information can be specified on the command line or stdin.
OPTIONS
--profilename
Specify the profile name that should be used as an identifier for the system in RHN Satellite, Red Hat Network Classic
--username
The username to register the system with under RHN Satellite or Red Hat Network Classic. This can be an existing RHN Satellite or
Red Hat Network Classic username, or a new username.
--password
The password associated with the username specified with the --username option. This is an unencrypted password.
--activationkey
Specify/use a serial number to associate with the system. This is optional, but activation keys can really simplify the registration
process. Learn more about activation keys in the online RHN documentation.
--contactinfo
This option has been deprecated. Please login to the server web user interface and update your contactinfo.
--nohardware
Do not probe or upload any hardware information.
--nopackages
Do not profile or upload any package information.
--novirtinfo
Do not profile or upload any virtualization information.
--norhnsd
Do not start rhnsd after completion.
--force
Register the system even if it has already been registered.
--version
Show the version of rhnreg_ks.
--proxy
Specify a HTTP proxy to use.
--proxyUser
Specify a username to use with an authenticated HTTP proxy.
--proxyPassword
Specify a password to use with an authenticated HTTP proxy.
--sslCACert
Specify a path to a SSL CA certificate to use.
--serverUrl
Specify a URL to as the server.
-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 RHN 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.
EXAMPLES
Register a new system to Red Hat Network Classic:
rhnreg_ks --profilename "example_profile_name" --username "someexampleuser" --password "foobar"
Register a new system to Red Hat Network Classic with contact info:
rhnreg_ks --profilename "example_profile_name" --username "someexampleuser" --password "foobar" --contactinfo < contactinfo
where the file "contactinfo" contains data in the format:
first_name: Billy
last_name: Bob
company: SomeCompanyName
city: Springfield
fax: 555-5555
phone: 555-5555
SEE ALSO
rhn_check(8), rhn_register(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 Adrian Likins <alikins@redhat.com> and James Bowes <jbowes@redhat.com>
BUGS
Report bugs to <http://bugzilla.redhat.com>.
COPYRIGHT
Copyright (C) 1999-2011 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 2011 February 4 RHNREG_KS(8)