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LEARN ABOUT NETBSD

crash

CRASH(8)						    BSD System Manager's Manual 						  CRASH(8)

NAME

     crash -- examine and debug system images

SYNOPSIS

     crash [-M core] [-N kernel]

DESCRIPTION

     The crash command is used to examine and debug system images.

     If run without any arguments, crash operates on the running system.

     The options are as follows:

     -M core	   Operate on the specified crash dump instead of the default /dev/mem.  Crash dumps should be from the same version of the system
		   and same machine architecture as the running version of crash, and must be uncompressed.

     -N kernel	   Extract the name list from the specified kernel instead of the default /dev/ksyms.

     The command syntax used by crash is the same as the in-kernel debugger.  See the ddb(4) manual page for more information.

     Operations and facilities that require a running system, such as breakpoints, are not supported by crash.

     crash does not provide pagination.  However, by using the pipe symbol, output may be sent to commands available from the shell.  For example:

	 crash> ps | more
	 crash> ps | grep ioflush

SEE ALSO

     ps(1), vmstat(1), ddb(4), pstat(8)

HISTORY

     The crash command appeared in NetBSD 6.0.

BSD
								   March 7, 2009							       BSD

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