During a scheduled maintenance window you must stop the graphical interface on a Linux server that is currently running graphical.target, install an updated video driver at the console, and then allow the system to boot back into the GUI the next time it restarts. Which single command should you run to place the host in a non-graphical multi-user state for the remainder of the current session only?
The systemctl isolate subcommand switches the active target immediately, starting all units required by the specified target and stopping units that are not dependencies of that target. Because the change is made only in the running session, the system reverts to the default target (graphical.target in this scenario) at the next boot. The set-default subcommand would permanently change the default target by modifying the default.target symlink. start multi-user.target merely starts the unit without stopping graphical services, so the display manager would continue running. enable multi-user.target only configures the target to start at boot if another unit requires it but does not switch the running state.
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