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telinit:tldr:b6bd1
telinit: Reboot the machine.
$ telinit 6
try on your machine
The command "telinit 6" is used in Linux/Unix systems to switch to runlevel 6, which is typically the reboot runlevel. Runlevels are different operating states of a system that determine which services and processes are running. In particular, runlevel 6 represents a system reboot.
Here is what happens when the "telinit 6" command is executed:
- The init process, which is the first process started by the Linux kernel, receives the signal to change the runlevel.
- Init checks the current runlevel and compares it with the requested runlevel (in this case, 6).
- If the current runlevel is already 6, no action is taken.
- If the runlevel is different from 6, several steps are performed to move the system to runlevel 6:
- Init sends the TERM signal to all processes, allowing them to terminate gracefully.
- Init waits for a specified period of time for the processes to terminate.
- If any processes do not terminate within the specified time, init sends the KILL signal to forcefully terminate them.
- Init then executes the scripts associated with runlevel 6, which include shutting down remaining services and devices.
- Finally, the system reboots, bringing it back up in a fresh state.
In summary, the command "telinit 6" triggers a system reboot by changing the runlevel to 6, resulting in the termination of running processes and services, followed by a reboot of the system.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.