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Full Discussion: No core dump
Top Forums UNIX for Dummies Questions & Answers No core dump Post 302479925 by fpmurphy on Monday 13th of December 2010 09:37:51 AM
Old 12-13-2010
Well, you have not told us what type of system you are on - so it is difficult to give a definitive answer.

Assuming you are on a GNU/Linux system., then enter
Code:
ulimit -c unlimited

 

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GCORE(1)						    BSD General Commands Manual 						  GCORE(1)

NAME
gcore -- get core images of running process SYNOPSIS
gcore [-f] [-s] [-c core] [executable] pid DESCRIPTION
The gcore utility creates a core image of the specified process, suitable for use with gdb(1). By default, the core is written to the file ``core.<pid>''. The process identifier, pid, must be given on the command line. The following options are available: -c Write the core file to the specified file instead of ``core.<pid>''. -f Dumps all available segments, excluding only malformed and undumpable segments. Unlike the default invocation, this flag dumps map- pings of devices which may invalidate the state of device transactions or trigger other unexpected behavior. As a result, this flag should only be used when the behavior of the application and any devices it has mapped is fully understood and any side effects can be controlled or tolerated. -s Stop the process while gathering the core image, and resume it when done. This guarantees that the resulting core dump will be in a consistent state. The process is resumed even if it was already stopped. The same effect can be achieved manually with kill(1). FILES
core.<pid> the core image HISTORY
A gcore utility appeared in 4.2BSD. BUGS
Because of the ptrace(2) usage gcore may not work with processes which are actively being investigated with truss(1) or gdb(1). Addition- ally, interruptable sleeps may exit with EINTR. The gcore utility is not compatible with the original 4.2BSD version. BSD
July 14, 2010 BSD
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