How to save the core file to disk?

Question

My program Seg faults but cannot find where Ubuntu saves the core file.

I have changed the core_pattern as follows but still no core file:
echo "core.%e.%p" > /proc/sys/kernel/core_pattern

I want to debug and see where it is crashing. Appreciate if someone could help to generate the core file disk.

Answer 1

First you should enable writing a core file with a command like

ulimit -c 10000
or 
ulimit -c unlimited 

where the number indicates the max. core size in 1kb blocks. Then you find the core file in your current directory.

Comments

see if it helps https://wiki.ubuntu.com/DebuggingProgramCrash

Answer 2

You can do the following
1. First set "ulimit -c unlimited" on the console.
2. Go to the following file : - " /proc/sys/kernel/core_pattern"
3. set the path where you need to get the core generated under "core_pattern"
example- /var/core_file/core.%e.%p.%t