在用locate查找命令找文件时提示如下：

-bash: locate: command not found

所以就想着是不是locate要yum来安装才可以呢，于是：

[root@localhost ~]# yum install locate

结果是No package locate available

接着就updatedb试试，提示：

-bash:updatedb:command not found

网上查了一下要先安装mlocate相应的包才可以，以前是slocate现在已被mlocate取代。

故：[root@localhost ~]# yum -y install mlocate

Loaded plugins: fastestmirror

Loading mirror speeds from cached hostfile

Setting up Install Process

Resolving Dependencies

--> Running transaction check

---> Package mlocate.x86_64 0:0.22.2-6.el6 will be installed

--> Finished Dependency Resolution

Dependencies Resolved

Package　　Arch　　Version　　Repository　　Size

Installing:

mlocate　　x86_64　　0.22.2-6.el6　　base　　86 k

Transaction Summary

Install       1 Package(s)

Total download size: 86 k

Installed size: 279 k

Downloading Packages:

mlocate-0.22.2-6.el6.x86_64.rpm　　|  86 kB     00:00

Running rpm_check_debug

Running Transaction Test

Transaction Test Succeeded

Running Transaction

Installing : mlocate-0.22.2-6.el6.x86_64　　1/1

Verifying  : mlocate-0.22.2-6.el6.x86_64　　1/1

Installed:

mlocate.x86_64 0:0.22.2-6.el6

Complete!

安装成功！执行locate passwd来搜索文件还是有报错：

[root@localhost ~]# locate passwd

locate: can not stat () `/var/lib/mlocate/mlocate.db': No such file or directory

还要使用updatedb命令来创建locate命令依赖的数据库：

[root@localhost ~]# updatedb

下面就可以使用locate命令了。