「systemd-inhibit」-

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systemd-inhibit – Execute a program with an inhibition lock taken

命令语法格式


systemd-inhibit [OPTIONS…] [COMMAND] [ARGUMENTS…]

systemd-inhibit [OPTIONS…] –list

命令描述


systemd-inhibit may be used to execute a program with a shutdown, sleep, or idle inhibitor lock taken. The lock will be acquired before the specified command line is executed and released afterwards.

Inhibitor locks may be used to block or delay system sleep and shutdown requests from the user, as well as automatic idle handling of the OS. This is useful to avoid system suspends while an optical disc is being recorded,

or similar operations that should not be interrupted.

For more information see the Inhibitor Lock Developer Documentation[1].

命令支持的选项及含义


The following options are understood:

–what=
Takes a colon-separated list of one or more operations to inhibit: “shutdown”, “sleep”, “idle”, “handle-power-key”, “handle-suspend-key”, “handle-hibernate-key”, “handle-lid-switch”, for inhibiting

reboot/power-off/halt/kexec, suspending/hibernating, the automatic idle detection, or the low-level handling of the power/sleep key and the lid switch, respectively. If omitted, defaults to “idle:sleep:shutdown”.

–who=
Takes a short, human-readable descriptive string for the program taking the lock. If not passed, defaults to the command line string.

–why=
Takes a short, human-readable descriptive string for the reason for taking the lock. Defaults to “Unknown reason”.

–mode=
Takes either “block” or “delay” and describes how the lock is applied. If “block” is used (the default), the lock prohibits any of the requested operations without time limit, and only privileged users may override it.

If “delay” is used, the lock can only delay the requested operations for a limited time. If the time elapses, the lock is ignored and the operation executed. The time limit may be specified in logind.conf(5). Note that

“delay” is only available for “sleep” and “shutdown”.

–list
Lists all active inhibition locks instead of acquiring one.

-h, –help
Print a short help text and exit.

–version
Print a short version string and exit.

退出状态


Returns the exit status of the executed program.

EXAMPLE


# systemd-inhibit wodim foobar.iso

This burns the ISO image foobar.iso on a CD using wodim(1), and inhibits system sleeping, shutdown and idle while doing so.

相关手册


systemd(1), logind.conf(5)

注意事项


1. Inhibitor Lock Developer Documentation

参考文献


  • man 1 systemd-inhibit, Version systemd 232

更新日志


  • 07/26/2018 创建文章