CentOS：利用yum provides命令

netstat命令所属的软件包为net-tools

[root@CentOS7 ~]# yum provides netstat
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: mirrors.sohu.com
 * extras: mirrors.sohu.com
 * updates: mirrors.163.com
net-tools-2.0-0.17.20131004git.el7.x86_64 : Basic networking tools
源    ：@anaconda
匹配来源：
文件名    ：/usr/bin/netstat

Ubuntu：利用apt-cache search命令

netstat命令所属的软件包为net-tools

root@Ubuntu1604:~# apt-cache search netstat
net-tools - NET-3 networking toolkit
gnome-nettool - GNOME 的网络信息工具
bwm-ng - small and simple console-based bandwidth monitor
libparse-netstat-perl - module to parse the output of the "netstat" command
netstat-nat - tool that display NAT connections
nicstat - print network traffic statistics
unhide - Forensic tool to find hidden processes and ports
whichman - Fault tolerant search utilities: whichman, ftff, ftwhich
root@Ubuntu1604:~#

查看net-tools包的信息

CentOS：yum info net-tools
Ubuntu：apt-cache show net-tools