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Full Discussion: how to retrieve IP address of a machine
Special Forums IP Networking how to retrieve IP address of a machine Post 87272 by Perderabo on Friday 21st of October 2005 04:08:34 PM
Old 10-21-2005
Quote:
Originally Posted by vertigo23
While Perderabo is right about the myriad of configurations a given box can have, on just about every Unix I've dealt with, 'ifconfig -a' will list the configuration, including IP address, for all your network interfaces.
Code:
#
#
# uname -srm
HP-UX B.11.11 9000/800
# ifconfig -a
ifconfig: no such interface
#

Quote:
Originally Posted by vertigo23
Also, it's certainly possible to configure a machine with no loopback interface. On BSD for example, just run 'ifconfig lo0 delete'.
The rfcs state that address 127.0.0.1 must never leave the originating system. Deleting the loopback interface will cause packets addressed to the loopback address to generate an error and this error constitutes a "contact". ;-)
 

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LEARN ABOUT DEBIAN

systemd-machine-id-setup

SYSTEMD-MACHINE-ID(1)					     systemd-machine-id-setup					     SYSTEMD-MACHINE-ID(1)

NAME

       systemd-machine-id-setup - Initialize the machine ID in /etc/machine-id

SYNOPSIS

       systemd-machine-id-setup

DESCRIPTION

       systemd-machine-id-setup may be used by system installer tools to initialize the machine ID stored in /etc/machine-id at install time with
       a randomly generated ID. See machine-id(5) for more information about this file.

       This tool will execute no operation if /etc/machine-id is already initialized.

       If a valid D-Bus machine ID is already configured for the system the D-Bus machine ID is copied and used to initialize the machine ID in
       /etc/machine-id.

       If run inside a KVM virtual machine and a UUID is passed via the -uuid option this UUID is used to initialize the machine ID instead of a
       randomly generated one. The caller must ensure that the UUID passed is sufficiently unique and is different for every booted instanced of
       the VM.

       Similar, if run inside a Linux container environment and a UUID is set for the container this is used to initialize the machine ID. For
       details see the documentation of the Container Interface[1].

OPTIONS

       This tool does not take any options or arguments.

EXIT STATUS

       On success 0 is returned, a non-zero failure code otherwise.

SEE ALSO

       systemd(1), machine-id(5), dbus-uuidgen(1)

AUTHOR

       Lennart Poettering <lennart@poettering.net>
	   Developer

NOTES

	1. Container Interface
	   http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface

systemd 							    10/07/2013						     SYSTEMD-MACHINE-ID(1)
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