systemd-ac-power
Report whether the computer is connected to an external power source. More information: https://www.freedesktop.org/software/systemd/man/systemd-ac-power.html.
-
Silently check and return a 0 status code when running on AC power, and a non-zero code otherwise:
systemd-ac-power -
Additionally print
yesornotostdout:
systemd-ac-power --verbose
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