有网的话
yum install net-tools
没有网,下载rpm文件net-tools-2.0-0.22.20131004git.el7.x86_64.rpm
http://mirror.centos.org/centos/7/os/x86_64/Packages/net-tools-2.0-0.24.20131004git.el7.x86_64.rpm
rpm -ivh net-tools-2.0-0.22.20131004git.el7.x86_64.rpm
即可
[root@host-51-196-2-149 nettool]# netstat -ntulp|grep 8090
tcp6 0 0 :::8090 :::* LISTEN 8793/java
```pppoe安装
https://centos.pkgs.org/7/centos-x86_64/rp-pppoe-3.11-7.el7.x86_64.rpm.html
在CentOS release 6.4 (Final)
1、使用yum安装：
yum install pppoe
rp-pppoe x86_64 3.10-11.el6
2、使用rpm安装包安装：
通过RPM 测试安装rp-pppoe-XXX.rpm，找到相关三个依赖包
下载这三个依赖包
rpm安装包官网：http://rpm.pbone.net/
先安装：rpm -ivh libpcap.x86_64 14:1.4.0-1.20130826git2dbcaa1.el6
下载网址：
https://centos.pkgs.org/6/centos-x86_64/libpcap-devel-1.4.0-4.20130826git2dbcaa1.el6.x86_64.rpm.html
再安装：ppp-2.4.5-10.el6.x86_64.rpm
下载网址：
http://rpm.pbone.net/index.php3/stat/4/idpl/27827711/dir/centos_6/com/ppp-2.4.5-5.el6.x86_64.rpm.html
最后安装：rp-pppoe-3.10-16.el6.x86_64.rpm
下载网址：
http://rpm.pbone.net/index.php3/stat/4/idpl/27828090/dir/centos_6/com/rp-pppoe-3.10-11.el6.x86_64.rpm.html
