装好系统发现使用locate查找文件，提示

-bash: locate: command not found

yum install locate 无效，看来locate不是软件名称

[root@centos64 ~]# yum search locate

============================= N/S Matched: locate ==============================
mlocate.x86_64 : An utility for finding files by name
which.x86_64 : Displays where a particular program in your path is located

[root@centos64 ~]# yum install mlocate

[root@centos64 ~]# locate mysql
locate: can not stat () `/var/lib/mlocate/mlocate.db': 没有那个文件或目录

[root@centos64 ~]# updatedb

完成。