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Quick links About
ifup and ifdown
Syntax
Examples
Related commands
Linux / Unix main page
About ifup and ifdown
ifup - bring a network interface up
ifdown - take a network interface down
Syntax
ifup [-nv] [--no-act] [--verbose] [-i FILE|--interfaces=FILE]
[--allow CLASS] -a|IFACE...
ifup -h|--help
ifup -V|--version
ifdown [-nv] [--no-act] [--verbose] [-i FILE|--interfaces=FILE]
[--allow CLASS] -a|IFACE...
| -a, --all |
If given to ifup, affect all
interfaces marked auto. Interfaces are brought up in the
order in which they are defined in /etc/network/interfaces.
If given to ifdown, affect all defined interfaces.
Interfaces are brought down in the order in which they are
currently listed in the state file. Only interfaces defined
in /etc/network/interfaces will be brought down. |
| --force |
Force configuration or
deconfiguration of the interface. |
| --allow=CLASS |
Only allow interfaces listed in
an allow-CLASS line in /etc/network/interfaces to be acted
upon. |
| -i FILE,
--interfaces=FILE |
Read interface definitions from
FILE instead of from /etc/network/interfaces. |
| -n, --no-act |
Don't configure any interfaces
or run any "up" or "down" commands. |
| --no-mappings |
Don't run any mappings. See
interfaces for more information about the mapping feature. |
| -V, --version |
Show copyright and version
information. |
| -v, --verbose |
Show commands as they are
executed. |
Examples
ifup -a
Bring up all the interfaces defined with auto in
/etc/network/interfaces
ifup eth0
Bring up interface eth0
ifdown -a
Bring down all interfaces that are currently up.
Related commands
ifconfig
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