Cockpit is a web-based management tool for Linux systems. It aims to simplify management tasks while maintaining compatibility with other administration tools.
Step 1
Cockpit requires the use of the firewalld service to be able to make changes to your firewall rules.
If you are using ufw as a host-based firewall
Remove ufw before replacing it with firewalld.
$ sudo apt-get remove --purge --yes ufw
Install firewalld as a host-based firewall
Install firewalld and maintain ssh access as well as enabling cockpit to receive incoming connections.
By default, the Cockpit web console listens on port 9090 for connections. If you want to make changes from the default, use the following command to edit /etc/systemd/system/cockpit.socket.d/override.conf.
$ sudo systemctl edit cockpit.socket
The example below changes the web console port from 9090 to 9091 and restricts access to the localhost.
### Editing /etc/systemd/system/cockpit.socket.d/override.conf
### Anything between here and the comment below will become the new contents of the file
[Socket]
ListenStream=
ListenStream=127.0.0.1:9091
### Lines below this comment will be discarded
Use the following command for your changes to take effect.
If you installed Cockpit on the local machine and changed the listening port to 9091, you can now access the Cockpit web console on https://localhost:9091.
Debian GNU/Linux was first released in 1993 and has been under active developement ever since. Today, the Debian Project unites thousands of contributors from across the globe with the aim of producing “an operating system distribution that is composed entirely of free software”.
This guide is intended to assist those who are installing Debian for the first time. It describes a straightforward path to a GNOME desktop. The number of applications is less in comparison to the default. Choose from more than 60000 official packages to tailor the system to your own requirements.
Debian and the new package formats
Debian stable is, above all else, focused on the task of maintaining bug-free software packages. It is the reason why Debian, in over 30 years, has gained a reputation for being “like a rock in an ever-swirling sea of updates”. It is also the reason why Debian stable does not keep up with the latest versions.
Universal package formats, such as Flatpak, Snap, or AppImage, are managed separately from conventional packaging systems and thus provide the end-user with added flexibility and choice. They solve the problem of stale distribution packages because newer versions can be installed without compromising the integrity of the underlying core.
Before you begin
In addition to the target computer, you should have access to a reasonably fast connection to the Internet. Ideally, your device would connect to your router using Ethernet. If your laptop does not have an Ethernet port and you are looking for a Linux-compatible adapter, consider getting the Plugable USB 3.0 Gigabit Ethernet Adapter. Using a wireless network, your Wi-Fi password is required twice during the installation.
Choose a hostname and a username for your setup. In the examples which follow, debian is used as the hostname and bookworm as the username. Just remember to make the substitutions when executing commands that reference either.
Choose 1) an encryption passphrase to encrypt your storage device, 2) a user password to secure your user account, and 3) a root password to secure the root account.
Ensure that all of your data is safely backed up because formatting your storage device will erase all of its data.
After completing the installation, Debian GNU/Linux will be the only operating system on your computer.
Installing Debian GNU/Linux
If your computer uses the Unified Extensible Firmware Interface (UEFI) and you are unsure about which settings to use, you may wish to disable the Secure Boot option.
Step 1
After booting the system from the USB stick that you have prepared, continue by selecting the text based installer.
Step 2
Keep English as the language for the installation.
[!!] Select a language
Language: English
Step 3
Keep United States as the location for your system. This will also set United States as the default locale for the system environment. You will have an opportunity to set additional locales and adjust time zones at a later point during the installation.
[!!] Select your location
Country, territory or area: United States
Step 4
Use the keymap that is the correct one for your particular keyboard.
[!!] Configure the keyboard
Keymap to use: your keyboard
Step 5
You will likely be asked to select the primary network interface for use during the installation. If network autoconfiguration fails, go back and try another interface from the list.
[!!] Configure the network
Network configuration method:
Retry network autoconfiguration
Retry network autoconfiguration with a DHCP hostname
Configure network manually
Do not configure the network at this time
Go Back
Step 6
Set the hostname for your system. In this example, we use debian as the hostname.
[!] Configure the network
Hostname: debian
Continue
[!!] Partition disks
Partitioning method: Guided - use entire disk and set up encrypted LVM
Be careful to select the correct target device for your system.
[!!] Partition disks
Select disk to partition: your target disk for installation
Choose to keep all files in one partition.
[!] Partition disks
Partitioning scheme: All files in one partition (recommended for new users)
Now write the changes to disk.
[!!] Partition disks
Write the changes to disk and configure LVM?
Yes
You may skip the overwriting of the disk with random data by selecting Cancel. Be aware, however, that skipping this step will lessen the quality of the encryption.
Step 9
Enter your encryption passphrase.
[!!] Partition disks
Encryption passphrase: your encryption passphrase
Continue
Confirm your encryption passphrase.
[!!] Partition disks
Re-enter passphrase to verify: your encryption passphrase
Continue
Step 10
Use the available space for partitioning your disk.
[!!] Partition disks
Amount of volume group to use for guided partitioning: max
Continue
Step 11
Write the changes to disk.
[!!] Partition disks
Finish partitioning and write changes to disk
Confirm writing the changes to disk.
[!!] Partition disks
Write the changes to disks?
Yes
Step 12
You may be asked to scan additional installation media.
[!] Configure the package manager
Scan extra installation media?
No
Step 13
Select your archive mirror country from the list.
[!] Configure the package manager
Debian archive mirror country: your country
Select an archive mirror from the list. For the fastest downloads, use the site that is closest to you.
[!] Configure the package manager
Debian archive mirror: mirror closest to you
You probably won’t need to configure an HTTP proxy:
[!] Configure the package manager
HTTP proxy information (blank for none): leave empty
Continue
[!] Configuring popularity-contest
Participate in the package usage survey?
Yes
Step 15
Choose standard system utilities from the list of predefined software collections and deselect all other entries.
[!] Software selection
Choose software to install:
[ ] Debian desktop environment
[ ] GNOME
[*] standard system utilities
Continue
Step 16
You may be asked if you want to install the GRUB boot loader to your primary drive. Select your target disk from Step 8 as the drive for boot loader installation.
[!] Install the GRUB boot loader
Install the GRUB boot loader to your primary drive?
Yes
Step 17
Remove the installation media before booting into your new system.
[!!] Finish the installation
Installation complete
Continue
Step 18
Enter your encryption passphrase to boot into the system for the first time. In this example, the encrypted disk is labelled sda3_crypt.
Please unlock disk sda3_crypt: your encryption passphrase
Log into the system with your username and user password.
Debian GNU/Linux 12 debian tty1
debian login: bookworm
Password: your user password
Step 19
Set the password for the root user by entering the following command. You will be asked for your user password to obtain sudo privileges first.
$ sudo passwd root
Step 20
Install a minimal GNOME desktop.
$ sudo apt-get install --yes gnome-core
If you are installing into a virtual machine, use this additional command to enable copy and paste between the host and the guest.
$ sudo apt-get install --yes spice-vdagent
Step 21
Restart your system.
$ sudo reboot
Step 22
Enter your encryption passphrase to boot into the system.
Please unlock disk sda3_crypt: your encryption passphrase
Select Show Applications from the the panel at the bottom of the screen or press [Super + a] and open the Settings application. On most keyboards, the [Super] key is the one with the Windows logo printed on it. Continue by adding the following keyboard shortcuts:
From within the GNOME desktop, open Firefox ESR by using the shortcut [Super + b] and re-open these instructions at edafe.de/step24.
Open a terminal with the shortcut [Super + t] and, where applicable, use copy and paste to enter the commands set out on this page. Be careful not to miss any punctuation.
Step 25
Set the time zone for your area.
$ sudo dpkg-reconfigure tzdata
Configuring tzdata
Geographic area: your area
Ok
Step 26
Configure locales for all the languages that your system is going to be used with. Use UTF-8 locales wherever possible.
$ sudo dpkg-reconfigure locales
In this example, German and Japanese locales are generated in addition to the default locale for the system environment.
Configuring locales
Locales to be generated:
[*] de_DE.UTF-8 UTF-8
[*] en_US.UTF-8 UTF-8
[*] ja_JP.UTF-8 UTF-8
OK
Keep en_US.UTF-8 as the default locale for the system environment.
Configuring locales
Default locale for the system environment:
en_US.UTF-8
OK
Step 27
The Desktop was disabled in GNOME 3.28. This decision was not universally popular at the time. However, developers pointed to the fact that, as an unmaintained feature, it stood in the way of other improvements. The following command hides the now orphaned Desktop folder from view.
$ echo Desktop >> ~/.hidden
Step 28
Install additonal Debian packages to give you a functional GNOME desktop.
$ echo -e '\n# use Neofetch to display information about the system\nif [ -f /usr/bin/neofetch ]; then\n clear && neofetch;\nfi' >> ~/.bashrc && source ~/.bashrc
Step 31
Enable the unattended installation of important upgrades.
$ sudo dpkg-reconfigure unattended-upgrades
Step 32
If in Step 5 you selected a wireless interface as the primary network interface for use during the installation, you will need to re-establish connection to the wireless network after rebooting.
The snap directory in your home folder is not supposed to be accessed manually. Use the following command to hide it from view.
$ echo snap >> ~/.hidden
Step 37
By default, Debian installs the Extended Support Release (ESR) version of Firefox. The ESR receives crash fixes, security fixes and policy updates as needed.
The flatpak, on the other hand, installs the Rapid Release version of Firefox. In contrast to the ESR, the Rapid Release receives major updates at least every four weeks. Both versions can be used concurrently. When installed on your desktop, they are listed as Firefox ESR and Firefox Web Browser, respectively.
As an option, you may install Firefox Rapid Release and set it as the default browser.
My favourite Desktop is Unity because it is not MATE. This has been bugging me for quite some time. Like almost everyone else on the planet, I was unhappy when in 2011 Canonical declared Unity Ubuntu’s new default desktop. After years of using GNOME 2, I just thought that Unity felt a bit awkward. But I stuck with it, mainly for a perceived lack of alternatives and my wish to avoid PPAs if at all possible. Fast-forward a few years and, thanks to the excellent Martin Wimpress, I hear of MATE Desktop Environment almost every other podcast I listen to. With the release of Ubuntu 15.10, MATE is finally elevated to official flavour status and I was sure to be making the switch away from Unity. I ended up using MATE for about one day before going back to Unity. It was quite an uncomfortable thing to have to admit, but there was a problem: After years of using Unity, I just thought that MATE felt a bit awkward…
“Many people discover LaTeX after years of struggling with wordprocessors and desktop publishing systems, and are amazed to find that TeX has been around for over 25 years and they hadn’t heard of it.” Peter Flynn
LaTeX is a free document preparation system that enables you to create beautifully typeset pages. It implements a set of commands designed to control TeX, the typesetting engine developed by Donald E Knuth. LaTeX stores the information about your documents as plain text, thus avoiding the risk of vendor lock-in and ensuring that your documents will still be editable twenty years from now. LaTeX processes the plain text data and, with pdfTeX working in the background, generates PDF output of the highest typographic quality—perfect for viewing on-screen or printing on paper. LaTeX runs on many platforms and is included as standard with most Linux distributions. Ready-to-run LaTeX systems are also available for Windows and Mac OS X.
