Networking

ifconfig or ip addr

show ip address

show list of connections

queries the DNS server for information about a domain name or IP address

sets up, maintains, and inspects the tables of IPv4/IPv6 packet filter rules in the Linux kernel firewall

ping host

send packets to host to check the connectivity

ping -c 5 host

send 5 packets to host

facilitates the transfer of data to or from a server, using any of the protocols it supports

Displays network connections and network statistics, such as active sockets, routing tables, and network interface statistics

Creates a pair of public and private authentication keys

ssh user@host

connect user to host using ssh

scp file1 user1@host:/dir

copy file1 from local to remote host host to /dir location