How to set up WIFI on Ubuntu running on the Raspberry Pi 4

First step is to check the status of the interfaces. For this, we will use the net-tools package. sudo apt install net-tools Then, we can see the interfaces status ifconfig -a In my case, I have this status of my interface wlan0: ubuntu@ubuntu:~$ ifconfig -a wlan0 wlan0: flags=4098<BROADCAST,MULTICAST> mtu 1500 ether dc:a6:32:6c:xx:xx txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0....

April 2, 2020 · 2 min · Yvoictra

Create a new user in Ubuntu from terminal

In order to create a new user in a Linux Ubuntu distribution from terminal, you have to use this command. sudo adduser username After this, the system will ask you some parameters included the password. [23:43:24] ubuntu|zoar:~$ sudo adduser yvoictra Adding user `yvoictra' ... Adding new group`yvoictra' (1001) … Adding new user `yvoictra' (1001) with group`yvoictra' … Creating home directory `/home/yvoictra' ... Copying files from`/etc/skel' … New password: Retype new password: passwd: password updated successfully Changing the user information for yvoictra Enter the new value, or press ENTER for the default Full Name []: Yvoictra Room Number []: Work Phone []: Home Phone []: Other []: Is the information correct?...

April 1, 2020 · 1 min · Yvoictra

Customize Bash Prompt with colours in Ubuntu

There are lot of people that simply like to customize the appearence of the terminal, is my case. When you use a terminal during a lot of time, it usually helps to have a prompt more visible than the default one. Backup First of all, you should make a backup of the configuration file in order to fall back in case it is necessary. The file is at the user $HOME, so first step is to go the directory....

April 1, 2020 · 2 min · Yvoictra

How to change your language and local configuration in Ubuntu

Connect with SSH to your machine and execute next command sudo dpkg-reconfigure locales After this, you will see a list of languages and countries. You have to select with space bar the language and country you need. In my case, as I live in Spain, I have selected es_ES.UTF-8. It is recommended to choose UTF-8 version. Finally, Ubuntu will ask you to select the default language to use in the operating system....

April 1, 2020 · 1 min · Yvoictra

How to install Ubuntu in your Raspberry Pi 4 without Keyboard nor screen

To install Ubuntu in your Raspberry Pi 4 what you need is: Raspberry Pi 4 USB-C cable Mini SD Card (recommended 16 Gb or more) PC Mini SD Card reader in your PC RJ45 Ethernet cable Switch or Router of your network The first step is to install Ubuntu software in your SD Card. For this, you shoud go to the Raspberry Pi Downloads page, and download the Raspberry Pi Imager....

March 31, 2020 · 2 min · Yvoictra

Change hostname in Ubuntu Linux

When we first install a new Operating System one of the typical request of the installation process is to set the hostname. To change the hostname in Ubuntu Linux system, you can follow different procedures. Editing system configuration files Edit the file /etc/hostname using the vi editor. Modify the old name and set the new one. $ sudo vi /etc/hostname Edit the file /etc/hosts and replace any ocurrence of the old name with the new one....

January 14, 2019 · 1 min · Yvoictra

List installed packages in Ubuntu

In some situations we need to know which packages we have installed in a Debian or Ubuntu system. In that case, we can use the tool dpkg, which will give us the information we need. Next command will give us the current packages installed with different states: dpkg --get-selections The states we can have are: install: The package is selected for installation. hold: A package marked to be on hold is not handled by dpkg, unless forced to do that with option –force-hold....

July 30, 2018 · 1 min · Yvoictra

How to Monitor an Ubuntu Server with Grafana and Prometheus

Grafana is an open source metric analytics & visualization tool which can help us to monitor the system with a nice Dashboard. Step 1: Installing Grafana Grafana is available in the APT packages repository, however it could not be the latest version, so we’ll use the official Grafana repository. First, it is needed to create the file /etc/apt/sources.list.d/grafana.list and add the following into it: deb https://packages.grafana.com/oss/deb stable main There is a separate repository for beta releases:...

July 29, 2018 · 3 min · Yvoictra