Ubuntu Package Management - Revision history

Test1: /* AppImage */

2025-03-19T17:31:29Z

AppImage

← Older revision		Revision as of 17:31, 19 March 2025
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	===AppImage===		===AppImage===

			====Using Terminal====
			* Make executable
			<code>chmod +x program.AppImage</code>
			* Run
			<code>./program.AppImage</code>

	===Flatpak===		===Flatpak===

AwesomO: /* dpkg remove */

2023-05-03T11:51:16Z

dpkg remove

← Older revision		Revision as of 11:51, 3 May 2023
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	===== '''dpkg''' remove=====		===== '''dpkg''' remove=====

	<code>dpkg -l \| grep steam</~~core~~>		<code>dpkg -l \| grep steam</code>
	* returns/output		* returns/output
	<pre>		<pre>

AwesomO: /* dpkg remove */

2023-05-03T11:50:54Z

dpkg remove

← Older revision		Revision as of 11:50, 3 May 2023
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	</pre>		</pre>

	<code>apt remove steam:i386</~~core~~>		<code>apt remove steam:i386</code>
	* return output		* return output
	<pre>Package 'steam:i386' is not installed, so not removed</~~core~~>		<pre>Package 'steam:i386' is not installed, so not removed</pre>

	The '''dpkg -l \| grep steam''' command shows that the '''steam:i386''' and '''steam-launcher''' packages are installed on your system, but when you try to remove them using the '''apt remove''' command, you get a message that the packages are not installed.		The '''dpkg -l \| grep steam''' command shows that the '''steam:i386''' and '''steam-launcher''' packages are installed on your system, but when you try to remove them using the '''apt remove''' command, you get a message that the packages are not installed.

AwesomO: /* Remove a package: */

2023-05-03T11:49:57Z

Remove a package:

← Older revision		Revision as of 11:49, 3 May 2023
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	<code>sudo apt purge <package-name></code>		<code>sudo apt purge <package-name></code>

			===== '''dpkg''' remove=====

			<code>dpkg -l \| grep steam</core>
			* returns/output
			<pre>
			rc steam:i386 1:1.0.0.74-1ubuntu2 i386 Valve's Steam digital software delivery system
			rc steam-launcher 1:1.0.0.76 all Launcher for the Steam software distribution service
			</pre>

			<code>apt remove steam:i386</core>
			* return output
			<pre>Package 'steam:i386' is not installed, so not removed</core>

			The '''dpkg -l \| grep steam''' command shows that the '''steam:i386''' and '''steam-launcher''' packages are installed on your system, but when you try to remove them using the '''apt remove''' command, you get a message that the packages are not installed.

			This can happen if the packages were installed manually using a different method than the standard apt package manager. In this case, the packages were likely installed manually by downloading and installing the Steam installer from the Steam website.

			To remove the Steam packages that are installed manually, you can run the following commands:

			<code>sudo dpkg -r steam:i386</code>

			<code>sudo dpkg -r steam-launcher</code>

			Use '''--purge''' to remove '''config files'''

			<code>sudo dpkg --purge steam:i386</code>

	==== Clean up unused dependencies:====		==== Clean up unused dependencies:====

AwesomO: /* Removing a PPA */

2023-05-03T11:41:25Z

Removing a PPA

← Older revision		Revision as of 11:41, 3 May 2023
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	<code>sudo apt update</code>		<code>sudo apt update</code>

			<div class="toccolours mw-collapsible mw-collapsed">
			Example: Finding the '''ppa:user/ppa-name''' to remove:
			<div class="mw-collapsible-content">
			* when i try an '''apt update'''
			<pre>
			The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F24AEA9FB05498B7
			Reading package lists... Done
			W: GPG error: https://repo.steampowered.com/steam stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F24AEA9FB05498B7
			E: The repository 'https://repo.steampowered.com/steam stable InRelease' is not signed.
			N: Updating from such a repository can't be done securely, and is therefore disabled by default.
			N: See apt-secure(8) manpage for repository creation and user configuration details.
			</pre>

			* Finding the '''package's''' and the '''repository'''

			: Check which packages are installed from the repository with the following command:

			<code>dpkg --list \| grep steam</code>

			: Remove any packages that are installed from the repository with the following command:

			<code>sudo apt-get remove --purge <package-name></code>

			: Find repository's

			<code>ls -l /etc/apt/sources.list.d/</code>
			* Returns:
			<pre>
			-rw-r--r-- 1 root root 296 Mar 1 18:55 steam-beta.list
			-rw-r--r-- 1 root root 228 Mar 1 18:55 steam-stable.list
			</pre>

			<code>cat /etc/apt/sources.list.d/steam-stable.list</code>
			* returns:
			<pre>
			deb [arch=amd64,i386 signed-by=/usr/share/keyrings/steam.gpg] https://repo.steampowered.com/steam/ stable steam
			deb-src [arch=amd64,i386 signed-by=/usr/share/keyrings/steam.gpg] https://repo.steampowered.com/steam/ stable steam
			</pre>

			<code>cat /etc/apt/sources.list.d/steam-beta.list</code>
			* returns:
			<pre>
			# Uncomment these lines to try the beta version of the Steam launcher
			#deb [arch=amd64,i386 signed-by=/usr/share/keyrings/steam.gpg] https://repo.steampowered.com/steam/ beta steam
			#deb-src [arch=amd64,i386 signed-by=/usr/share/keyrings/steam.gpg] https://repo.steampowered.com/steam/ beta steam
			</pre>

			* Note: In '''steam-beta.list''' the lines are commented out with '''#''' at the beginning of the line.
			* You can comment out the lines in '''steam-stable.list''' and '''sudo apt update'''
			* Or you can delete the file '''steam-stable.list''' and '''sudo apt update'''

			</div>
			</div>

	====Editing Repository Configuration Files====		====Editing Repository Configuration Files====

imported>AwesomO: /* Snaps */

2023-04-18T01:48:50Z

Snaps

← Older revision		Revision as of 01:48, 18 April 2023
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	Ubuntu Snap packages are a universal packaging format designed to work across different Linux distributions. Snap packages are self-contained and automatically updated, which makes them a convenient choice for both sysadmins and new users. Here's an in-depth guide to help you understand and use Snap packages in Ubuntu:		Ubuntu Snap packages are a universal packaging format designed to work across different Linux distributions. Snap packages are self-contained and automatically updated, which makes them a convenient choice for both sysadmins and new users. Here's an in-depth guide to help you understand and use Snap packages in Ubuntu:

	~~:* '''~~ Installation of Snapd:~~'''~~		==== Installation of Snapd:====

	Before you can manage Snap packages, you need to have the snapd service installed on your Ubuntu system. It usually comes pre-installed on recent versions of Ubuntu.		Before you can manage Snap packages, you need to have the snapd service installed on your Ubuntu system. It usually comes pre-installed on recent versions of Ubuntu.
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	</pre>		</pre>

	:* ~~'''~~Searching for Snap packages:~~'''~~		==== Searching for Snap packages:====

	To search for available Snap packages, use the snap find command followed by a keyword:		To search for available Snap packages, use the snap find command followed by a keyword:
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	Replace <keyword> with the name or keyword related to the package you are looking for.		Replace <keyword> with the name or keyword related to the package you are looking for.

	:* ~~'''~~Installing Snap packages:~~'''~~		==== Installing Snap packages:====

	To install a Snap package, use the snap install command:		To install a Snap package, use the snap install command:
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	Replace <snap-package-name> with the exact name of the Snap package you want to install.		Replace <snap-package-name> with the exact name of the Snap package you want to install.

	:* ~~'''~~Listing installed Snap packages:~~'''~~		==== Listing installed Snap packages:====

	To see a list of installed Snap packages on your system, use the snap list command:		To see a list of installed Snap packages on your system, use the snap list command:
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	<code>snap list</code>		<code>snap list</code>

	:* ~~'''~~Updating Snap packages~~:'''~~		==== Updating Snap packages====

	Snap packages are updated automatically by default. However, if you want to manually update a specific Snap package, you can use the snap refresh command:		Snap packages are updated automatically by default. However, if you want to manually update a specific Snap package, you can use the snap refresh command:
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	<code>sudo snap refresh</code>		<code>sudo snap refresh</code>

	:* ~~'''~~Removing Snap packages~~:'''~~		==== Removing Snap packages====

	To remove an installed Snap package, use the snap remove command:		To remove an installed Snap package, use the snap remove command:
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	Replace <snap-package-name> with the exact name of the Snap package you want to remove.		Replace <snap-package-name> with the exact name of the Snap package you want to remove.

	~~:* '''~~Removing Snap and also delete the package's data and configuration files~~.'''~~		==== Removing Snap and also delete the package's data and configuration files====

	<code>snap remove --purge example_package</code>		<code>snap remove --purge example_package</code>
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	: The --purge option is used to specify that you not only want to remove the snap package, but also to delete its associated data and configuration files. This option helps ensure that all remnants of the package are removed from your system, providing a clean uninstall.		: The --purge option is used to specify that you not only want to remove the snap package, but also to delete its associated data and configuration files. This option helps ensure that all remnants of the package are removed from your system, providing a clean uninstall.

	~~:* '''~~Managing Snap package services~~:'''~~		====Managing Snap package services====

	Some Snap packages provide system services. You can manage these services using the snap services command:		Some Snap packages provide system services. You can manage these services using the snap services command:
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	Replace <snap-package-name> with the exact name of the Snap package containing the service you want to manage.		Replace <snap-package-name> with the exact name of the Snap package containing the service you want to manage.

	~~:* '''~~Snap package channels~~:'''~~		====Snap package channels====

	Snap packages are distributed through different channels, such as stable, candidate, beta, and edge. By default, the stable channel is used. To install a Snap package from a specific channel, use the --channel option:		Snap packages are distributed through different channels, such as stable, candidate, beta, and edge. By default, the stable channel is used. To install a Snap package from a specific channel, use the --channel option:

imported>AwesomO: /* Managing Package Repositories */

2023-04-18T01:45:27Z

Managing Package Repositories

← Older revision		Revision as of 01:45, 18 April 2023
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	<code>sudo apt update</code>		<code>sudo apt update</code>

	Removing a PPA		====Removing a PPA====

	:* To remove a PPA, open a terminal and type:		:* To remove a PPA, open a terminal and type:
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	<code>sudo apt update</code>		<code>sudo apt update</code>

	Editing Repository Configuration Files		====Editing Repository Configuration Files====

	The repository configuration files are stored in the '''/etc/apt/sources.list''' file and the files inside '''/etc/apt/sources.list.d/''' directory.		The repository configuration files are stored in the '''/etc/apt/sources.list''' file and the files inside '''/etc/apt/sources.list.d/''' directory.
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	<code>sudo apt update</code>		<code>sudo apt update</code>

	Managing Repositories with Software & Updates		====Managing Repositories with Software & Updates====

	:* You can also manage repositories using the Software & Updates application.		:* You can also manage repositories using the Software & Updates application.
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	In Ubuntu, software packages often rely on other packages to function properly. These required packages are called dependencies. The Advanced Package Tool (APT) automatically handles dependency management, ensuring that all required packages are installed or updated when you install, update, or remove a package.		In Ubuntu, software packages often rely on other packages to function properly. These required packages are called dependencies. The Advanced Package Tool (APT) automatically handles dependency management, ensuring that all required packages are installed or updated when you install, update, or remove a package.

	:* Installing a Package and Its Dependencies		===== Installing a Package and Its Dependencies=====
	: When you install a package using APT, it automatically resolves and installs the dependencies.		: When you install a package using APT, it automatically resolves and installs the dependencies.

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	<code>sudo apt update && sudo apt upgrade</code>		<code>sudo apt update && sudo apt upgrade</code>

	:* Removing a Package and Unused Dependencies		===== Removing a Package and Unused Dependencies=====
	: When you remove a package, APT will not automatically remove its dependencies if they are no longer required. To remove unused dependencies, use the 'autoremove' command.		: When you remove a package, APT will not automatically remove its dependencies if they are no longer required. To remove unused dependencies, use the 'autoremove' command.

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	</pre>		</pre>

	:* Listing Dependencies of a Package		===== Listing Dependencies of a Package =====
	: You can use the '''apt-cache''' command to list the dependencies of a specific package without installing it.		: You can use the '''apt-cache''' command to list the dependencies of a specific package without installing it.

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	:* Replace "package-name" with the appropriate package name.		:* Replace "package-name" with the appropriate package name.

	:* Listing Reverse Dependencies		===== Listing Reverse Dependencies=====
	: Reverse dependencies are packages that depend on a specific package. You can list them using the 'apt-cache' command.		: Reverse dependencies are packages that depend on a specific package. You can list them using the 'apt-cache' command.

imported>AwesomO: /* Update the package index: */

2023-04-18T01:41:56Z

Update the package index:

← Older revision		Revision as of 01:41, 18 April 2023
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	This command will download package information from your configured repositories and update the local package index.		This command will download package information from your configured repositories and update the local package index.

	:* Search APT for packages		==== Search APT for packages====

	To search for packages in the Ubuntu repository using APT, you can use the apt-cache search command followed by a keyword. For example:		To search for packages in the Ubuntu repository using APT, you can use the apt-cache search command followed by a keyword. For example:
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	Once you have found the package you want to install, you can install it using the apt-get install or apt install command.		Once you have found the package you want to install, you can install it using the apt-get install or apt install command.

	:* Install a new package:		==== Install a new package:====

	To install a new package, use the apt install command followed by the package name:		To install a new package, use the apt install command followed by the package name:

imported>AwesomO: /* APT */

2023-04-18T01:41:22Z

APT

← Older revision		Revision as of 01:41, 18 April 2023
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	===APT===		===APT===

	:* Update the package index:		==== Update the package index:====

	Before installing or updating software, it's essential to update the package index to ensure you have the latest information about available packages and their versions. Run the following command:		Before installing or updating software, it's essential to update the package index to ensure you have the latest information about available packages and their versions. Run the following command:
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	Replace <package-name> with the name of the package you want to install. APT will automatically handle the package's dependencies, installing them if necessary.		Replace <package-name> with the name of the package you want to install. APT will automatically handle the package's dependencies, installing them if necessary.

	:* Update installed packages:		==== Update installed packages:====

	To update all the installed packages to their latest available versions, run:		To update all the installed packages to their latest available versions, run:
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	This command will upgrade packages based on the updated package index. It's a good practice to run this command regularly to keep your system up to date and secure.		This command will upgrade packages based on the updated package index. It's a good practice to run this command regularly to keep your system up to date and secure.

	:* Update a specific package:		==== Update a specific package:====

	If you want to update a specific package, use the apt install command again:		If you want to update a specific package, use the apt install command again:
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	Replace <package-name> with the name of the package you want to update. This command will only upgrade the specified package if a newer version is available.		Replace <package-name> with the name of the package you want to update. This command will only upgrade the specified package if a newer version is available.

	:* Remove a package:		==== Remove a package:====

	If you want to remove a package, use the apt remove command followed by the package name:		If you want to remove a package, use the apt remove command followed by the package name:
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	<code>sudo apt purge <package-name></code>		<code>sudo apt purge <package-name></code>

	:* Clean up unused dependencies:		==== Clean up unused dependencies:====

	Over time, your system may accumulate unused dependency packages. You can clean up these packages using the apt autoremove command:		Over time, your system may accumulate unused dependency packages. You can clean up these packages using the apt autoremove command:
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	This command will remove any packages that were installed as dependencies but are no longer needed by any installed software.		This command will remove any packages that were installed as dependencies but are no longer needed by any installed software.

	:* Install from a <b>.deb</b> file		==== Install from a <b>.deb</b> file====

	To install a .deb file that you have downloaded or obtained from an external source, you can use the dpkg command. First, navigate to the directory containing the .deb file using the cd command:		To install a .deb file that you have downloaded or obtained from an external source, you can use the dpkg command. First, navigate to the directory containing the .deb file using the cd command:

imported>AwesomO: /* Snaps */

2023-04-17T19:42:53Z

Snaps

← Older revision		Revision as of 19:42, 17 April 2023
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	Ubuntu Snap packages are a universal packaging format designed to work across different Linux distributions. Snap packages are self-contained and automatically updated, which makes them a convenient choice for both sysadmins and new users. Here's an in-depth guide to help you understand and use Snap packages in Ubuntu:		Ubuntu Snap packages are a universal packaging format designed to work across different Linux distributions. Snap packages are self-contained and automatically updated, which makes them a convenient choice for both sysadmins and new users. Here's an in-depth guide to help you understand and use Snap packages in Ubuntu:

	:* Installation of Snapd:		:* ''' Installation of Snapd:'''

	Before you can manage Snap packages, you need to have the snapd service installed on your Ubuntu system. It usually comes pre-installed on recent versions of Ubuntu.		Before you can manage Snap packages, you need to have the snapd service installed on your Ubuntu system. It usually comes pre-installed on recent versions of Ubuntu.
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	</pre>		</pre>

	:* Searching for Snap packages:		:* '''Searching for Snap packages:'''

	To search for available Snap packages, use the snap find command followed by a keyword:		To search for available Snap packages, use the snap find command followed by a keyword:
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	Replace <keyword> with the name or keyword related to the package you are looking for.		Replace <keyword> with the name or keyword related to the package you are looking for.

	:* Installing Snap packages:		:* '''Installing Snap packages:'''

	To install a Snap package, use the snap install command:		To install a Snap package, use the snap install command:
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	Replace <snap-package-name> with the exact name of the Snap package you want to install.		Replace <snap-package-name> with the exact name of the Snap package you want to install.

	:* Listing installed Snap packages:		:* '''Listing installed Snap packages:'''

	To see a list of installed Snap packages on your system, use the snap list command:		To see a list of installed Snap packages on your system, use the snap list command:
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	<code>snap list</code>		<code>snap list</code>

	:* Updating Snap packages:		:* '''Updating Snap packages:'''

	Snap packages are updated automatically by default. However, if you want to manually update a specific Snap package, you can use the snap refresh command:		Snap packages are updated automatically by default. However, if you want to manually update a specific Snap package, you can use the snap refresh command:
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	<code>sudo snap refresh</code>		<code>sudo snap refresh</code>

	:* Removing Snap packages:		:* '''Removing Snap packages:'''

	To remove an installed Snap package, use the snap remove command:		To remove an installed Snap package, use the snap remove command:
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	Replace <snap-package-name> with the exact name of the Snap package you want to remove.		Replace <snap-package-name> with the exact name of the Snap package you want to remove.

	:* Managing Snap package services:		:* '''Removing Snap and also delete the package's data and configuration files.'''

			<code>snap remove --purge example_package</code>

			: The --purge option is used to specify that you not only want to remove the snap package, but also to delete its associated data and configuration files. This option helps ensure that all remnants of the package are removed from your system, providing a clean uninstall.

			:* '''Managing Snap package services:'''

	Some Snap packages provide system services. You can manage these services using the snap services command:		Some Snap packages provide system services. You can manage these services using the snap services command:
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	Replace <snap-package-name> with the exact name of the Snap package containing the service you want to manage.		Replace <snap-package-name> with the exact name of the Snap package containing the service you want to manage.

	:* Snap package channels:		:* '''Snap package channels:'''

	Snap packages are distributed through different channels, such as stable, candidate, beta, and edge. By default, the stable channel is used. To install a Snap package from a specific channel, use the --channel option:		Snap packages are distributed through different channels, such as stable, candidate, beta, and edge. By default, the stable channel is used. To install a Snap package from a specific channel, use the --channel option: