Guide Ubuntu

guide_ubuntu.md

Users

Create a group:

sudo groupadd mygroup

Add user to group:

usermod -a -G mygroup user

Networking

Command	Description
ls /sys/class/net/	List network interfaces
ip link show	List network interfaces
ip address show	Show ip address
hostname -I	Show IP associated with hostname.
ip -c -br addr	Lists all interfaces and their IP addresses.
ip a s dev enp0s1	Show IP of a given device. In this example the divice is enp0s1.
hostname	Show machine hostname.
ip link set <device> down ip link set <device> up	Turn device on or off.

Copy SSH key to VM Server

cat ~/.ssh/id_rsa.pub | ssh ctk@192.168.64.2 "cat >> ~/.ssh/authorized_keys && chmod 600 ~/.ssh/authorized_keys"