Ubuntu 18.04 tips Mon, Aug 19, 2019

linux tips ubuntu ubuntu 18.04

Check network interfaces

$ ls /sys/class/net
eno1  eno2  lo

Configuration Static IP

/etc/netplan/01-netcfg.yaml

network:
  version: 2
  renderer: networkd
  ethernets:
    eno1:
      addresses:
        - 192.168.0.207/24
      gateway4: 192.168.0.1
      nameservers:
          addresses: [168.126.63.1,8.8.8.8]
    eno2:
      dhcp4: yes

Restart network

$ sudo netplan apply

Sudoers file, enable NOPASSWD for user, all commands

$ sudo visudo -f /etc/sudoers.d/myOverrides 
YOUR_USERNAME  ALL=NOPASSWD: ALL

UFW

$ sudo ufw allow OpenSSH
$ sudo ufw enable
$ sudo ufw allow 8808/tcp
$ sudo ufw allow 50000:50100/tcp
$ sudo ufw status verbose
$ sudo ufw allow from 1.1.1.1 to any port 22 proto tcp

Changing host name

sudo hostnamectl set-hostname dpgserver
sudo vi /etc/hosts

MPlayer

Install

sudo apt install mplayer mplayer-fonts

Install GUI version

sudo apt install smplayer