ifquery 命令

常用示例

说明

ifquery queries network interface configuration as defined in /etc/network/interfaces and its interfaces.d/ drop-in directory. It is read-only and never modifies interface state. When called without --state, it parses the configuration file and prints the stanzas matching the given interface(s). With --state, it reads /run/network/ifstate to show which interfaces are currently marked as up. On systems using ifupdown2 (common on newer Debian/Ubuntu), additional features are available including --check to compare running state against configuration and JSON output.

参数

-a, --all

Query all interfaces marked auto in the configuration.

--list

List matching interface names instead of printing their configuration. Combine with --all or --allow to filter.

--state

Query the state file (/run/network/ifstate) for currently active interfaces rather than the configuration file.

--check

Compare running interface state against its configuration and report differences (ifupdown2 only).

--allow _CLASS_

Only match interfaces in the given allow class (e.g. auto, hotplug).

-i, --interfaces _FILE_

Read configuration from _FILE_ instead of /etc/network/interfaces.

--force

Force the operation (used with some queries in ifupdown2).

-V, --version

Display version information.

-h, --help

Display help information.