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Core Blimey
A record of a processes state - can be big
- Can be examined long after the event, on another machine.
ulimit -c 600000 (e.g.) to enable
Ctrl-\ to force a core dump (send SIGQUIT)
- Useful on a program which has hung
Examine using gdb
Notes:
It is best to keep core files disabled in normal use since you can easily use 100s of MB of disc space with core files.
Remember that Ctrl-\ only works on a command line for some command line programs; its generated in a similar way to Ctrl-C.
Core files can be useful when a program only crashes occasionally - and when you weren't expecting it!