a buddhist might say that this is a question wrongly asked. if you want to shut off a system immediately, you can use "poweroff -f", but you might find that it isn't "safe", in that it doesn't send halt signals to the running processes, so you might get errors in the file system. that happened to me a little while back. and i beleive just running "poweroff" turns the system off safely, but possibly not very quickly.
halt
Halt
shutdown -r now
You can view the history of commands entered on a Linux system with the history command.
top
To stop heartbeat in Linux the command line will be service Heartbeat stop To start heartbeat in Linux the command line will be service Heartbeat start
Exactly what the name says: It displays and sets the date on a Linux system.
You can shut down most Linux systems by issuing the 'halt' command.
lpstat
shutdown-hnow
I want to answer the question of linux command , what is the meaning of the tip " bad argument "peg" " in linux system ?
The mount command instructs the kernel to access the file system on a partition or device.
The 'man' or the 'info' command have documentation about utilities and commands in the system.