1LINUX_REBOOT_CMD_RESTART 2LINUX_REBOOT_CMD_HALT 3LINUX_REBOOT_CMD_CAD_ON 4LINUX_REBOOT_CMD_CAD_OFF 5LINUX_REBOOT_CMD_POWER_OFF 6LINUX_REBOOT_CMD_RESTART2 7LINUX_REBOOT_CMD_SW_SUSPEND 8LINUX_REBOOT_CMD_KEXEC 9