Linux operating system suspend, hibernate, shutdown related commands __linux

Suspend is a power-saving mode, the system will be the machine's hard disk, monitor and other external devices to stop working, while the CPU, memory is still working, waiting for users to wake up at any time, to wake up again need to press the keys on the keyboard several times.

Body Sleep is a more power-saving mode, it will be in memory of the data stored in the hard disk, so that the CPU also stopped working, when used again to press the switch machine key, the machine will revert to your execution of the state of hibernation, and do not have to perform the startup operating system complex process.

Standby is to keep the currently running data in memory, the machine only power the memory, while the hard disk, screen and CPU parts will stop powering. Because the data is stored in fast memory, it is faster to enter the wait state and wake up. However, the data is stored in memory, and loss of data is caused by a power outage.

Turn off the machine immediately:

Halt

Init 0

Shutdown-h now

Shutdown-h 0

Timer/delay Shutdown:

Shutdown-h 10:00

Shutdown-h +30//unit for minutes

Reboot:

Reboot

Init 6

Shutdown-r now

Dormancy:

sudo pm-hibernate

echo "Disk" >/sys/power/state

sudo hibernate-disk

Standby/Suspend:

sudo pm-suspend

sudo pm-suspend-hybrid

echo "Mem" >/sys/power/state

sudo hibernate-ram