hibernate

This command hibernates the system to disk.

Interface

hibernate [ -h ]

This command hibernates the machine immediately by writing disk to /sys/power/state. The call blocks until the system is woken up, then returns.

Unlike 66 halt, 66 poweroff and 66 reboot, hibernating does not stop any service: the whole system state is saved to the swap device and restored on wake-up. There is no clean shutdown procedure, no grace time and no scheduled when argument.

Hibernation requires a properly configured swap device (the kernel resume parameter must point to it). If no resume device is available, the command fails and the system stays up.

This command requires root privileges.

Options

• -h, --help: print this help.

Usage examples

Hibernates the system to disk.

66 hibernate