Operating Systems Linux Red Hat ifconfig eth0 unplumb equivalent Post 302724945 by Corona688 on Thursday 1st of November 2012 01:16:56 PM
Originally Posted by Tommyk
Personally i no longer use ifconfig on Linux.
$ man ifdown
No manual entry for ifdown
$ ifdown
-bash: ifdown: command not found
$ whereis ifdown

All RedHat is Linux, but not all Linux is RedHat.
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IFSCHEME(8)							     Commands							       IFSCHEME(8)

ifscheme - scheme control for network interfaces SYNOPSIS
ifscheme [-v] [[-s] newscheme] mapping <interface> script ifscheme-mapping DESCRIPTION
ifscheme allows you to change network configuraton schemes or query the current scheme. It integrates with the ifup(8) command and inter- faces(5). For example, you might use this program to configure a "home" scheme and a "work" scheme for a network device on a laptop. When you move between home and work, a simple command can reconfigure your networking. If you run the program with no parameters, it will tell what the current network scheme is. The ifscheme-mapping utility is used to tell the ifup and ifdown utilities about the current scheme. OPTIONS
-v --verbose Run in verbose mode. This is passed in to the ifup and ifdown programs as well. -l --list list all schemes available/defined in /etc/network/interfaces. newscheme -s newscheme --scheme newscheme Change to a new network configuration scheme. When the scheme is changed, network interfaces that were using the old scheme will be taken down and brought back up to use the new configuration scheme. -s or --scheme are mandatory if newscheme begins with a -. CONFIGURATION
To make the program do anything useful when a scheme is selected, you must edit /etc/network/interfaces to add a mapping for the interface (or interfaces) that can be controlled on a per-scheme basis. Suppose you want to control eth0 in this way. You might have an existing eth0 configuraton in there, such as: auto eth0 iface eth0 inet static address netmask gateway To change this so you can chose between static routing and dhcp, replace it with the following (it helps to ifdown the interface first). auto eth0 mapping eth0 script ifscheme-mapping iface eth0-home inet static address netmask gateway iface eth0-work inet dhcp Now if you run "ifscheme home" and ifup the interface, you'll get the eth0-home configuration stanza. If you run "ifscheme work", it will be changed to the eth0-work stanza. You can add additional stanzas as desired, but the label must always be of the form <hardware inter- face>-<scheme name>. If you have a second interface (perhaps a wireless network card on eth1), you can duplicate the above for that interface, changing the eth0 and the configuration details as appropriate, but remember to add an iface stanza for every scheme name for the second interface. FILES
/etc/network/interfaces the interfaces definition file /etc/network/run/scheme the current scheme /etc/network/run/ifstate a record of the current state of the interfaces, managed by ifup and ifdown BUGS
All schemed interfaces will have the same scheme. Any schemed interface which does not have an entry for the current scheme and is not configured when the scheme is changed will not be suc- cessfully configured when it is brought up. SEE ALSO
interfaces(5) ifup(8) ifdown(8) DISTRIBUTION
Redistribution is subject to the GNU public license. AUTHORS
Joey Hess <joey@kitenet.net>, Peter Wilson <pwilson@cs.hmc.edu> IFSCHEME(8)

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