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Mac OS X Tiger in a Nutshell by Jason McIntosh, Chuck Toporek, Chris Stone, Andy Lester

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Name

halt

Synopsis

halt [options]

Prepares the system and then terminates all processes, usually ending with a hardware power-off. During preparation, all filesystem caches are flushed, and running processes are sent SIGTERM followed by SIGTERM.

Options

-l

Don't log the halt via syslog (i.e., mach_kernel: syncing disks...).

-n

Don't flush filesystem caches. Should not be used indiscriminately.

-q

The filesystem caches are flushed, but the system is otherwise halted ungracefully. Should not be used indiscriminately.

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