Here’s how to find out the versions of all installed packages in Linux Mint / Ubuntu / Debian Linux:
1. Issue the following command at the terminal -
sudo apt-get install apt-show-versions
2. After the installation is complete, issue the following command at the terminal -
apt-show-versions > versions.txt
3. Now open up ‘versions.txt’ file to view the list of versions of all the packages in your system -
The application also compares the package versions to those available in the repositories and lets you know if the installed version is the same, newer or older than the package version available in the repository.