Discover is a software center that can graphically manage packages to install different programs and utilities.
Discover is a software center. It allows you to install and remove programs and utilities.
Useage
Usage
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To search for applications in discover type in the box that says search and then press enter.To install an application after searching press the install button and then enter your password to make sure you want to install it.
Discover allows you to search for applications by using the search box. Clicking on a program will give you a description of it. When installing or removing software you will be prompted for your password.You can also browse through different cattegories on the left clicking on the different categories.
You can also browse through different cattegories on the left clicking ont he different categories of applications. If you have any updates you need to do check on the bottom of the left column for updates. If none are available you can click the button to check for updates manually. If you wait and then have updates press apply all updates and then enter your password in.
Discover allows you to update software using the Updates tab located on the bottom of the left column. You can click the button to "check for updates" manually.
To remove a package you can look through all of your installed packages you can search in the upper left hand corner and the press the remove button and enter your password to remove packages.
To remove software use the Installed tab. You can browse your installed packages, search usign the search bar (upper left corner), and the click the remove button to remove software.
Screenshot
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..image:: discover_screen.png
Version
Version
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@ -16,4 +21,4 @@ Lubuntu ships with version 5.13.5 of discover.
How to launch
How to launch
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To luanch Discover from the menu -> System Tools -> Discover or run plasma-discover from the command line.
To launch Discover from the menu -> System Tools -> Discover or run plasma-discover from the command line.
We are proud to present the highly anticipated release of Lubuntu 18.10! This release comes with many changes, which will probably be overshadowed by the highly anticipated mobe to the LXQT desktop environment. Naturally a big change like this can cause problems so we strongly recommend you back up your files. In fact we recommend you backup your files before any upgrade.
We are proud to present the highly anticipated release of Lubuntu 18.10! This release comes with many changes, which will probably be overshadowed by the highly anticipated move to the LXQT desktop environment. Naturally a big change like this can cause problems so we strongly recommend you back up your files. In fact we recommend you **backup your files** before any upgrade. Also please ensure that your laptop is charging as upgrades may take a while and unexpected power failures could be disasterous.
There are two methods of upgrading Lubuntu releases. The first is using the update manager a graphical user interface. The second involves the command line and is useful for server upgrades.
There are two methods of upgrading Lubuntu releases. The first is using the update manager a graphical user interface. The second involves the command line and is useful for server upgrades.
Upgrading with GUI
Upgrading with GUI
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-First ensure your system is up-to-date by starting Software Updater and performing software updates
First ensure your system is up-to-date by starting Software Updater and performing software updates
- This can be done by clicking the Menu (Alt + F1) ->System tools ->Software Updater
- This can be done by clicking the Menu (Alt + F1) ->System tools ->Software Updater
- When prompted click Install Now
- When prompted click Install Now.
- After the install is completed you may be prompted to reboot. If not reboot manually.
- After the install is completed you may be prompted to reboot. If not reboot manually.
-After rebooting start the update manager.
- .. image:: 02_up-to-date.png
- This can be done by clicking the Menu (Alt + F1) ->Preferences ->Software and Updates
-Since 18.10 is not a LTS (long term support) version you may have to opt in for non LTS version
- Select the Updates-> Notify me of a new Ubuntu version -> For any new version
- Close the update manager and the update manager should prompt you to upgrade to the lastest release.
- Alternatively you can
Since 18.10 is not a LTS (long term support) version you may have to opt in for non LTS version
- start a terminal (Ctrl + Alt + T)
- Select the Updates-> Notify me of a new Ubuntu version -> For any new version, from Sofware and Updates
- and type in the command "update-manager -d", where the d flag refers to upgrade from hte supported to the development release
- Close the update manager and the update manager should prompt you to upgrade to the lastest release.
- .. image:: 03_development_release.png
- Alternatively you can start a terminal (Ctrl + Alt + T) and type in the command "update-manager -d"
- where the d flag refers to upgrade from hte supported to the development release
Next you will want to upgrade to the new release.
- After rebooting start the update manager.
- This can be done by clicking the Menu (Alt + F1) ->Preferences ->Software and Updates
- You should be prompted to upgrade. Click upgrade.
- .. image:: 04_release_available.png
- Read the release notes
- .. image:: 05_release_notes.png
- Once the upgrade has completed restart your machine.
Upgrading with command line
Upgrading with command line
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The first step will be to make sure your current software is up to date. This case be done by entering the following command into the terminal. If prompted enter your password.
..code::
sudo apt-get update && sudo apt-get upgrade -y
Once the software upgrade has completed you want to restart you pc. This can be done in a number of ways, the following command is only one. Where '0' is the shutdown delay and the -r flag means restart
..code::
shutdown 0 -r
The next thing you want to do is do the release upgrade. Do release upgrade is the command line tool for upgrading lubuntu releases. To run it you need root privledges which from the command line means typing sudo in front to run as root. Upgrades to a new operating system version can sometimes cause problems so please backup all your files beforehand. Since Lubuntu 18.10 switches to LXQt from the previous LXDE releases so this upgrade is more complicated. This process will need to remove some of the old LXDE process to not have a cluttered and incosistent system. Enter the following command into your terminal.
..code::
sudo do-release-upgrade
You may be prompted "No new release found", if so follow this step, else skip it.
Since Lubuntu 18.04 was a long term support release you will have to opt-in for development releases. It is important that you keep your software up to date in these releases as they are cutting edge and have regular security updated. In software and updates (Menu -> Prefrences -> Software & Updates), on the updates tab, notify me of a new ubuntu version and select **For any new version** and enter your password to authenticate this choice. The software and updates manager edits the "/etc/update-manager/release-upgrades" file, and sets "Prompt=normal".
Now update your software and run do-release-upgrade in a terminal, basically start the process over.
During the release upgrade several changes will take place, you will need to choose a display manager, the new default is Simple Desktop Display Manager (SDDM). This will happen in the middle of the install so don't walk away until after you have done this. The upgrade will remove several more obsolete packages.
After the installation reboot into the new 18.10 system.You be greeted by a new login screen that is the SDDM display manager and a notification that this is now your first time running lxqt power managent.
Many of the old application will not be removed. Newer application with the same functionality where installed. Having this many unnesccesary application could bloat your system so uninstalling them may be a good idea. The following command will remove unneccesary applications.
Do release upgrade is the command line tool for upgrading lubuntu releases. To run it you need root privledges which from the command line means typing sudo in front to run as root. Upgrades to a new operating system version can sometimes cause problems so please backup all your files beforehand and you should be backing up your files anyway to not lose them. The command you need to enter is sudo do-release-upgrade on the command line this checks if a new version is released and will upgrade. This will upgrade a lot of packages so plugging in your laptop is strongly recommended.
To remove uneeded dependencies enter the following command:
Since Lubuntu 18.10 switches to LXQt from the previous LXDE releases so this upgrade is more complicated. This process will need to remove some of the old LXDE process to not have a cluttered and incosistent system. Since Lubuntu 18.04 was a long term support release in software and updates which you can launch from the menu in Lubuntu 18.04 by menu -> Prefrences -> Software & Updates. Then on the updates tab notify me of a new ubuntu version and select for any new version and enter your password to authenticate this choice. The GUI will give you a notice of a new release or from the command line you can run `sudo do-release-upgrade`. This gives a warning that this may take several hours and install many new packages so make sure you have time to finish this as you can break your install if you do not finish the install.
..code::
After this place several changes will need to take place after sudo do-release-upgrade will have you choose which display manager to use and then to the new default of sddm in the new by selecting sddm as the display manager This will happen in the middle of the install so don't walk away until after you have done this otherwise it will be stuck and not continue the upgrade process. After a long wait several more obsolete packages by do-release-upgrade will show some of the packages not needed by lubuntu anymore but this could mostly be old kerneles which are no longer strictly nessecary so press y to remove them or n to not or press d for more details. The next part involves you need to reboot into the new 18.10 system that will still have lots of bloated packages that you may not nesecarily need installed press y to reboot the system. You should now reboot come to a new login screen that is the sddm display manager and be greeted with a notification that this is now your first time running lxqt power managemnt you will need to remove the following packages if you want a not overly cluttered system `sudo apt purge leafpad file-roller galculator gpicview xpad xfburn simple-scan mtpaint pidgin sylpheed transmission-gtk abiword evince gnumeric audiacious gnome-mpv guvcview pcmanfm gdebi lxterminal hardinfo lightdm lxpanel lxsession obconf gnome-software gnome-disk-utilityi system-config-printer-gnome lxhotkey-gtk synaptic update-manager lxpolkit lxtask lxshortcut blueman usb-creator-gtk` .
sudo apt autoremove
After this very long command there will still be uneeded dependencies of programs left over so you can run `sudo apt autoremove`.
Simon Quigley
6 years ago
