首先，要确保生成core，需要运行命令
ulimit -c unlimited
这个在脚本中设置还是很简单的，比如在/etc/init.d/data_service脚本中：
PROGRAM=/home/dist/tcp/data_service_d
test -x $PROGRAM || exit 0
case "$1" in
start)
log_begin_msg "Starting data service"
ulimit -c unlimited
$PROGRAM /home/dist/tcp/config.xml &
cd -
log_end_msg 0
;;
stop)
PID=`pidof data_service_d`
log_begin_msg "Stopping data service"
if [ ! -z "$PID" ]; then
kill -15 $PID
fi
log_end_msg 0
;;
restart)
$0 stop
$0 start
;;
*)
log_success_msg "Usage: service data_service {start|stop|restart}"
exit 1
esac
exit 0
但是很快就发现，core文件的位置不在/home/dist/tcp目录下，而是在/ 目录下。
这是通过pidof data_service_d 找到进程id，然后查到cwd链接指向的是/
ot@vm6:/# pidof data_service_d 12326 root@vm6:/# ls /proc/12326/cwd -alh lrwxrwxrwx 1 root root 0 Sep 24 11:41 /proc/12326/cwd -> /
我希望能够改变目录所在的位置，直接放到/home/dist/tcp目录下。其实很简单，在启动脚本中先进入/home/dist/tcp/目录，然后再启动程序，即可。
!/bin/sh
### BEGIN INIT INFO
# Provides: chenshu
# Required-Start:
# Required-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: dataservice
# Description: dataservice server
### END INIT INFO
. /lib/lsb/init-functions
PROGRAM=/home/dist/tcp/data_service_d
test -x $PROGRAM || exit 0
case "$1" in
start)
log_begin_msg "Starting data service"
cd /home/dist/tcp
ulimit -c unlimited
./data_service_d ./config.xml &
cd -
log_end_msg 0
;;
stop)
PID=`pidof data_service_d`
log_begin_msg "Stopping data service"
if [ ! -z "$PID" ]; then
kill -15 $PID
fi
log_end_msg 0
;;
restart)
$0 stop
$0 start
;;
*)
log_success_msg "Usage: service data_service {start|stop|restart}"
exit 1
esac
exit 0
再检查一下：
root@vm6:/# pidof data_service_d 12680 root@vm6:/# ls /proc/12680/cwd -alh lrwxrwxrwx 1 root root 0 Sep 24 12:01 /proc/12680/cwd -> /home/dist/tcp