Linux GDB Tricks - nscendoni/tutorials GitHub Wiki

  1. Check and set ulimit for core size:

     		#ulimit -a | grep core
 		core file size          (blocks, -c) 0
 		#ulimit –c unlimited
 		#ulimit -a | grep core
 		core file size          (blocks, -c) unlimited

  2. Generate core file for a running process

     		$gdb --pid=10008
 		gdb>gcore
 		$ ls -lh /var/tmp/core.10008

  3. Set byte directly

                             set {byte}<addr> = 0x00
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