halt command is used to shut down a running Linux operating system. It is a simple command that initiates the system shutdown process.
halt command is used to initiate a system shutdown. When executed, it sends a signal to all running processes to terminate them and then halts the system. The shutdown process is initiated in a safe and controlled manner, allowing the system to save any unsaved data and close all open files.
The basic syntax of the
halt command is:
To shut down the system immediately, simply execute the
halt command with no options:
This will immediately initiate the system shutdown process.
If you want to delay the shutdown process by a specific amount of time, you can use the
-t option followed by the number of seconds to delay:
$ halt -t 60
This will initiate the shutdown process after a delay of 60 seconds.
The following table lists all available options for the
||Forces an immediate shutdown, without saving unsaved data or closing open files.|
||Shuts down the system and turns off power.|
||Does not actually halt the system, but only writes the shutdown message to the wtmp log file.|
||Does not write the shutdown message to the wtmp log file.|
- If the
haltcommand does not work, try using the
shutdowncommand with the
- If the system does not shut down properly, try using the
rebootcommand to restart the system and then try shutting it down again.
haltcommand requires root privileges to execute.
-foption should be used with caution, as it can cause data loss and file corruption.