根据PID找到程序目录

[zhk@hadoop2jt usr]$ ps -ef | grep redis

zhk   3119     1  0 Jun23 ?        01:39:00 src/redis-server

zhk   3996 30315  0 17:21 pts/0    00:00:00 grep redis

[zhk@hadoop2jt usr]$ pwdx 3119

3119: /home/zhk/redis-2.6.16

lsof -p  31030