ifdown 命令

常用示例

说明

ifdown brings down network interfaces that were previously configured with ifup. It reads interface definitions from /etc/network/interfaces and executes the appropriate commands and scripts to deconfigure the interface. The command performs any necessary cleanup including removing IP addresses, stopping DHCP clients, and running user-defined scripts defined in the interfaces file.

参数

-a, --all

Affect all defined interfaces, brought down in the order listed in the state file.

--allow _CLASS_

Only act on interfaces listed in an `allow-CLASS` stanza in /etc/network/interfaces (e.g. `allow-hotplug`).

-i _FILE_, --interfaces=_FILE_

Read interface definitions from _FILE_ instead of /etc/network/interfaces.

--state-dir=_DIR_

Keep interface state in _DIR_ instead of /run/network.

-X _PATTERN_, --exclude=_PATTERN_

Exclude interfaces matching _PATTERN_.

-o _OPTION=VALUE_

Set _OPTION_ to _VALUE_ as if defined in /etc/network/interfaces.

-n, --no-act

Don't configure any interfaces or run up/down commands (dry run).

-v, --verbose

Show commands as they are executed.

-f, --force

Force deconfiguration even if ifupdown believes the interface is not up.

--ignore-errors

Continue even if a command or script fails.

--no-mappings

Do not run mappings during deconfiguration.

--no-scripts

Don't run any scripts under /etc/network/if-*.d/.

-V, --version

Show copyright and version information.

-h, --help

Show summary of options.