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32 .\" @(#)reboot.8 8.1 (Berkeley) 6/9/93
43 .Nd stopping and restarting the system
62 utilities flush the filesystem cache to disk, send all running processes
67 and, respectively, halt or restart the system.
68 The action is logged, including entering a shutdown record into the
72 The options are as follows:
73 .Bl -tag -width indent
75 The system is requested to create a crash dump.
77 supported only when rebooting, and it has no effect unless a dump
78 device has previously been specified with
83 on the next system boot.
84 If the kernel boots successfully, the
86 kernel will be booted on succesive boots, this is a one-shot option.
87 If the boot fails, the system will continue attempting to boot
89 until the boot process is interrupted and a valid kernel booted.
90 This may change in the future.
94 logged to the system log.
95 This option is intended for applications such as
101 and log this themselves.
103 The filesystem cache is not flushed.
104 This option should probably not be used.
106 The system is halted or restarted quickly and ungracefully, and only
107 the flushing of the filesystem cache is performed (if the
110 This option should probably not be used.
112 The system will turn off the power
114 This is of course likely to make
124 utilities are nothing more than aliases for the
132 utility is used when the system needs to be halted or restarted, giving
133 users advance warning of their impending doom and cleanly terminating