. CentOS
想查看哪个port开了,却提示命令无效
# yum -y install net-tools
2. How to install "wget" command in Linux and how to use multiple :
https://www.cyberciti.biz/tips/linux-wget-your-ultimate-command-line-downloader.html
![](https://img2018.cnblogs.com/blog/1413226/201810/1413226-20181019023107681-1388424712.png)
3.
. CentOS
想查看哪个port开了,却提示命令无效
# yum -y install net-tools
2. How to install "wget" command in Linux and how to use multiple :
https://www.cyberciti.biz/tips/linux-wget-your-ultimate-command-line-downloader.html
![](https://img2018.cnblogs.com/blog/1413226/201810/1413226-20181019023107681-1388424712.png)
3.