You want to look at a list of all installed packages on debian, ubuntu, kubuntu, knoppix, ...
The dpkg command can deliver information about all installed packages.
(l = a lowercase L)
You can write it in a temporary file like this:
dpkg -l > /tmp/all-packages.txt
For mor information you can look at the manual page. (man dpkg)
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.