ulimit & core dump

1. ulimit -c [num]    get or set core-dump file size

         ulimit -c 1024

         ulimit -c unlimited

2.// Append pid for core file name

echo "1" > /proc/sys/kernel/core_uses_pid

3.// Append timestamp for core file name

corename format specifiers:

• %p - pid
• %u - uid
• %g - gid
• %s - signal number
• %t - UNIX time of dump
• %h - hostname
• %e - executable filename
• %% - output one "%"
• %<NUL> - "%" is dropped
• %<OTHER> - both are dropped

echo "core.%e.%t" > /proc/sys/kernel/core_pattern

 

4.SIGQUIT    "ctrl + /"

 

5.gdb core dump file

$gcc -g test.c -o test

$./test

(coredump)

$gdb test

1. ulimit -c [num]    get or set core-dump file size

         ulimit -c 1024

         ulimit -c unlimited

2.// Append pid for core file name

echo "1" > /proc/sys/kernel/core_uses_pid

3.// Append timestamp for core file name

echo "core%t" > /proc/sys/kernel/core_pattern

 

4.SIGQUIT    "ctrl + /"

 

 

5.gdb core dump file

$gcc -g test.c -o test

$./test

(coredump)

$gdb test core1301297882.5387