1、使用whereiswhich都没有找到

[root@Henry ~]# whereis redis
redis:
[root@Henry ~]# which redis
/usr/bin/which: no redis in (/usr/java/jdk1.8.0/bin:/usr/java/jdk1.8.0/jre/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin)

2、使用ps -ef|grep redis

先查到进程id,根据id查找目录

[root@Henry ~]# ps -ef|grep redis
root     23218 23196  0 09:42 pts/1    00:00:00 grep --color=auto redis
devuser  25679     1  0 Jan08 ?        00:02:42 src/redis-server 10.3.25.70:16379
`进程号25679`
[root@Henry ~]# ls -l /proc/25679/cwd
lrwxrwxrwx 1 devuser devuser 0 Jan 14 09:42 /proc/25679/cwd -> /data/devuser/redis