Linux list package versions

Check Debian/Ubuntu Linux package version using apt-get/aptitude command

Method #1: Ubuntu Linux package version apt-cache command

The syntax is:
apt-cache policy OR
apt-cache madison For example, before I install nginx package I would like to know what version of nginx I would get on my system, run:
$ apt-cache policy nginx
OR
$ apt-cache madison nginx

Fig.01: apt-cache check package version on Debian/Ubuntu Linux

Method #2: Debian Linux package version using apt command

The syntax is
apt list apt list vim
Sample outputs:

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I have vim package # 7.4.963 version installed on my system.

Method #3: Check package version using aptitude command

The syntax is:
aptitude versions aptitude versions | more
aptitude versions | awk < print $2 >
To find htop version you are about to install on Ubuntu server, enter:
$ aptitude versions htop
Sample outputs:

Method #4: Package simulation using aptitude or apt-get command

The syntax is as follows:
aptitude -V -s install apt-get -V -s install No action taken. It perform a simulation of events that would occur based on the current system state but do not actually change the system. Of course, press n when prompted to avoid installation.

A note about finding version of installed packages

Use the following syntax:
apt-show-versions OR
dpkg -s dpkg -s | grep -i version
To see version of install package called vim, run:
$ apt-show-versions vim
vim:amd64/xenial 2:7.4.963-1ubuntu5 uptodate
vim:i386 not installed
OR
$ dpkg -s vim | grep -i version
Version: 2:7.4.963-1ubuntu5
Vim is an almost compatible version of the UNIX editor Vi.
This package contains a version of vim compiled with a rather
version of Vim. See the other vim-* packages if you need more

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How do I see what packages are installed on Ubuntu Linux?

I am a new Ubuntu Linux server user. My server hosted at Google cloud VM. How do I see what packages are installed on Ubuntu Linux?

Introduction: Ubuntu Linux is an open source operating system based upon the Linux kernel and GNU command line utilities. Ubuntu Linux is extremely popular among new Linux users as well as developers all around the globe. This page shows how to list all installed packages with apt command or apt-get command on Ubuntu Linux.

Tutorial details
Difficulty level	Easy
Root privileges	Yes
Requirements	Debian or Ubuntu Linux
Est. reading time	5 minutes

You need to use the apt or apt-get or dpkg command to list all installed packages on an Ubuntu Linux server from the bash shell prompt.

How do I see what packages are installed on Ubuntu Linux?

The procedure to list what packages are installed on Ubuntu:

1. Open the terminal application or log in to the remote server using ssh (e.g. ssh user @ sever-name )
2. Run command apt list —installed to list all installed packages on Ubuntu
3. To display a list of packages satisfying certain criteria such as show matching apache2 packages, run apt list apache

Let us see some examples about how to list installed packages on Ubuntu and Debian Linux operating systems.

apt list installed packages

Let us list all software packages on Ubuntu Linux available for us:
$ apt list

You might want to use the grep command/egrep command to filter out:
$ apt list | grep nginx
OR
$ apt list | more
However, you may see message on screen that read as follows:

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

To avoid this message use the dpkg command as follows:
$ dpkg —list | grep nginx
$ dpkg —list | more

List all installed packages only

The apt command displays both installed and packages available to install. What if you want to list currently installed software only? Fear not, pass the option to the apt command:
$ apt list —installed

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How to list or find out if a specific package installed or not

Run package policy as follows:
$ apt list -a pkgNameHere
Is sudo package installed?
$ apt list -a sudo
Is sudo package mariadb-server?
$ apt list -a mariadb-server

Ubuntu list installed packages

It is also possible to list installed packages matching given pattern. The syntax is:
dpkg -l pattern
dpkg —list pattern
apt list pattern
apt list —installed pattern
For example:
dpkg —list ‘x*’
Sample outputs:

• ii – Indicates that package named xauth installed.
• un – Indicates that package not installed or in Unknown status.

Listing installed packages sorted by installation date and time

There is no simple command, but we can use the combination of zgrep and other commands as follows. Let us count it:

Total installed packages on nixcraft-wks01 : 6433
List them:
zgrep » installed » /var/log/dpkg.log*

Please note that zgrep will search possibly compressed files for a regular expression as those log files are compressed by system. Hence, we need to use various z commands on Linux. See “How to find out when Debian or Ubuntu package installed or updated” for more info.

Conclusion

You learned how to list both installed and uninstalled packages on an Ubuntu Linux server or desktop using the CLI method. See the following man pages using the man command:
man apt
man apt-get
man dpkg

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How to List Installed Packages on Ubuntu and Debian-based Linux Distributions

Last updated August 23, 2021 By Abhishek Prakash 20 Comments

So you installed Ubuntu and started using it extensively. Somewhere down the line, you are bound to lose the track of the software that you had installed over the time .

That’s perfectly normal. No one expects you to remember all the packages installed on your system. But the question arises, how to know what packages have been installed? How to see the installed packages?

To list all the installed packages using apt:

apt list –installed

Read the rest of the tutorial to know more about other ways and some more tips to fine tune your search for installed packages.

List installed packages in Ubuntu and Debian

If you use apt command extensively, you would probably expect a command like apt list installed packages. You are not entirely wrong here.

While apt-get command doesn’t have a straightforward option like apt-get list installed packages, apt has a command for this.

This will list all the packages that have been installed using apt. It will also list the packages that were installed as a dependency. Which means that not only you’ll have the applications you installed, you’ll also have a huge list of libraries and other packages that you didn’t install directly.

Check whether a specific package is installed in Ubuntu

Since the list of installed packages is a huge one, it would be a better idea to use grep and filter the output for a certain package.

A better way is to use this command:

Both q options are for quiet mode. And this way, it only looks for programs that are installed.

Note that the above method also lists the applications installed with .deb files. That’s cool, isn’t it?

Other ways to check installed packages in Ubuntu/Debian

If you have read my apt vs apt-get comparison article, you probably already know that both apt and apt-get basically use dpkg . This means you can use dpkg command to list all the installed packages in Debian.

You can filter the output with grep again to search for a specific package.

So far, you have dealt with applications installed with Debian’s package manager. What about Snap and Flatpak applications? How to list them because they are not accessible with apt and dpkg?

To show all the Snap packages installed on your system, use this command:

Snap list also indicates which applications are from a verified publisher with a green tick.

To list all the Flatpak packages installed on your system, use this:

Let me summarize it for you.

To list packages using apt command:

apt list –installed

To list packages using dpkg command:

dpkg -query -l

To list Snap packages installed on your system:

snap list

To list Flatpak packages installed on your system:

flatpak list

List the recently installed packages

So far you saw the list of installed packages in alphabetical order. What if you want to see the packages that have been installed recently?

Thankfully, a Linux system keeps a log of everything that happens in your system. You can refer to the logs to see the recently installed packages.

There are a couple of ways to do this. You can either use the dpkg command’s log or the apt command’s log.

You’ll have to use grep command to filter the result to list the installed packages only.

This will list all the packages including the dependencies that were installed recently on your system along with the time of installation.

You can also use the history of apt command. This will show only the programs that you installed using apt command. It won’t show the dependencies installed with it, though the details are present in the logs. Sometimes, you just want to see that, right?

The output should be something like this:

The history log of apt is quite useful because it shows the time when the apt command was run, the user who ran the command and the packages that were installed by a command.

Bonus Tip: Show installed applications in Software Center

If you are not comfortable with the terminal and the commands, you still has a way to see the applications installed on your system.

You can open the Software Center and click on the Installed tab. You’ll see the list of applications that have been installed on your system.

It won’t show the libraries and other command line stuff though but perhaps you don’t want to see that as you are more GUI centric. Otherwise, you can always use the Synaptic Package Manager.

That’s it

I hope this quick little tutorial helped you to see the list of installed packages on Ubuntu and Debian based distributions.

If you have questions or suggestions to improve this article, please leave a comment below.

Like what you read? Please share it with others.

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How can I check the available version of a package in the repositories?

How can I check the version of the available package in the Ubuntu repositories without installing it?

7 Answers 7

Use the command:

This gives you information of all available package versions.

From the output, you can see that there are two versions available: 2.0.8-0ubuntu0.13.04.1 and 2.0.6-1 . It also tells you which repositories they are coming from.

Installed: tells you the version you have installed. If you don’t have the package installed, you’ll see (none) .

Candidate: is the version that will be installed if you use apt-get install vlc . If you want to install the other version, you would do apt-get install vlc=2.0.6-1 .

Go to packages.ubuntu.com, fill in the search form and get a nice view of the package including the version.

Hit search, then:

Additional benefits

• Will also list versions of packages for other versions of Ubuntu. Eg. if you want to know about the version of the package in Raring (13.04), but your system still has Precise (12.04), then this will provide a way to find it out.
• You don’t even need Ubuntu to be installed.

Biggest downside is that it won’t list the versions of other repositories you possible have installed, such as PPAs. You will then need the apt-cache policy approach as already posted.

Pro tip

Take the shortcut — just browse to http://packages.ubuntu.com/packagename and replace packagename with the name of the package you want to query.

It also gives information about all available package versions in the repositories. This command output had the syntax like this:

apt-cache’s madison command attempts to mimic the output format and a subset of the functionality of the Debian archive management tool, madison. It displays available versions of a package in a tabular format. Unlike the original madison, it can only display information for the architecture for which APT has retrieved package lists (APT::Architecture).

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