Thread: Is crash a command

Is there any command called crash in UNIX operating system. I can across this term in a book but could not get much detail on this. Can someone help me to know about this?

I do not think crash is a command in UNIX operating system. It refers to an activity or an operation in which the system becomes unoperatable.

Yes Stephen you are right Crash is not a command and it is an activity in UNIX operating system.

Originally Posted by scott

Is there any command called crash in UNIX operating system. I can across this term in a book but could not get much detail on this. Can someone help me to know about this?

hi,
yes,

crash is command to the crash dump
regards
kanth

Originally Posted by scott

Is there any command called crash in UNIX operating system. I can across this term in a book but could not get much detail on this. Can someone help me to know about this?

crash is a command to examine the crash dumps

The crash command is used to examine the system memory image of a running or a crashed system by formatting and printing control structures, tables, and other information. Command line arguments to crash are dumpfile, namelist, and output-file.
OPTIONS
-d dumpfile
Specify dumpfile as the file containing the system memory image. The default dumpfile is /dev/mem . The system image can also be the pathname of a dump file generated by the savecore utility.
-n namelist
Specify the text file namelist which contains the symbol table information needed for symbolic access to the system memory image to be examined. The default namelist is /dev/ksyms. Note: It is recommended that crash dumps be analyzed on a machine having the same kernel architecture as the machine that the dump was taken from.
-w output-file
When the crash command is invoked, a session is initiated. The output from a crash session is directed to output-file. The default output-file is the standard output.

regards

Umakanth.G