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To shut down the HP-UX server you need to issue a standard Unix command shutdown. The command /sbin/shutdown is used to terminate all processing. It has several options, including the following:
when you issue the shutdown command, it performs several actions:
To reboot the system type:
To halt the system type:
You will be asked whether you want to type a message to users informing them of the impending system shutdown. After you type the message, it is immediately sent to all users. After the specified time elapses (60 seconds is the default), the system begins the shutdown process. Once you receive a message that the system is halted, you can power off all your system components.
To shut down the system in two minutes without being asked any questions or sending any message, type:
shutdown -h -y 120
At times, you will need to go into single-user mode with shutdown to perform some task such as a backup or to expand a logical volume, and then reboot the system to return it to its original state.
The shutdown command with no options puts you into single-user mode. On older versions of the operating system, you could go to single-user mode by using the init command with the s option (init s). However, this is highly discouraged because this command does not terminate other system activity nor does it log users off; therefore, it does not result in a true single-user state.
If the system is already in single-user mode or you like to live dangerously, you can execute /usr/sbin/reboot. I strongly suggest that you issue shutdown, which will call reboot. The reboot command abruptly terminates all processes and then halts or reboots the system. Also, with dynamically loadable kernel modules, reboot will not load these modules; only shutdown will. Again, I recommend using the shutdown command, not reboot.
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