linux - 为什么我不能 cd 到/var/lib/mysql

Question

结构如下

ravas@ravas-desk-lmde /var/lib $ pwd
/var/lib
ravas@ravas-desk-lmde /var/lib $ ls -l | grep mysql
drwx------ 13 mysql   mysql   4096 Feb 10 22:32 mysql

当我试图进入/var/lib/mysql 时，我没有权限

ravas@ravas-desk-lmde /var/lib $ cd mysql/
bash: cd: mysql/: Permission denied

虽然我属于mysql组

ravas@ravas-desk-lmde /var/lib $ groups ravas 
ravas : ravas adm dialout cdrom floppy sudo audio dip video plugdev lpadmin sambashare mysql

这里有什么问题？

Answer 1

sudo -i

然后

cd /var/lib/mysql/