```
列出所有已经安装的包 yum list installed
查看nfs-utils 软件是否安装,更新 yum info nfs-utils
查看rpcbind 软件是否安装,更新 yum info rpcbind
[root@aubin aubin]# yum info rpcbind
已加载插件:fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirrors.ustc.edu.cn
* extras: mirrors.ustc.edu.cn
* updates: mirrors.ustc.edu.cn
已安装的软件包
名称 :rpcbind
架构 :x86_64
版本 :0.2.0
发布 :49.el7
大小 :101 k
源 :installed
来自源:base
简介 : Universal Addresses to RPC Program Number Mapper
网址 :http://git.linux-nfs.org/?p=steved/rpcbind.git;a=summary
协议 : BSD
描述 : The rpcbind utility is a server that converts RPC program numbers into
: universal addresses. It must be running on the host to be able to make
: RPC calls on a server on that machine.
查看nfs-server.service服务是否启动 systemctl status nfs-server.service
查看rpcbind.service 服务是否启动 systemctl status rpcbind.service
```