Linux EoP

system

#Centos
hostnamectl
cat /etc/centos-release
cat /etc/os-release
cat /etc/*release

#Centos&Redhat
rpm -qa

interface

#show all interface
ifconfig -a
ip addr

#show specific interface
ip addr show dev eth0

arp

arp -n
ip neigh

route

route -n
ip route

net state

netstat -tunlp
ss -tunlp

Centos

cat  /etc/sysconfig/network-scripts/ifcfg*
cat /etc/sysconfig/network

list package

rpm -qa

systemctl list-unit-files|grep enabled

#nfs
cat /etc/exports