ifup - bring a network interface up
ifdown - take a network interface down
ifup [-sinv] [--interfaces=file] [--no-act] [--verbose] [-a|ifaces]
ifdown [-sinv] [--interfaces=file] [--no-act] [--verbose] [-a|ifaces]
The ifup and ifdown commands may be used to configure (or, respectively,
deconfigure) network interfaces, based on descriptions of the
interfaces entered into the file /etc/network/interfaces.
These programs follow the usual GNU command line syntax, with long
options starting with two dashes (`-'). A summary of options is
Show summary of options.
Show copyright and version information.
Affect all interfaces marked auto.
-i file, --interfaces file
Read interface definitions from a different file.
Show commands being executed.
Don't actually execute the commands (this doesn't disable mappings,
Don't run any mappings.
Force de/configuration of interface.
The ifup and ifdown programs don't actually know anything about configuring
interfaces themselves but instead invoke lower-level utilities
such as ifconfig and route to do the actual dirtywork. The main advantages
to using ifup and ifdown instead of calling the lower-level utilities
directy is the ability to keep all your interface specifications
in a single (easily parsable) file, and to not have to deal with the
various idiosyncracies of the lower-level commands.
Descriptions of all the network interfaces the system has.
Current state of network interfaces.
The ifupdown suite written by Anthony Towns <email@example.com>.
February 13, 2000 ifupdown(8)
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