dpkgkatoolinpackage-managementsoftware-uninstall
I made the mistake of installing Katoolin package https://github.com/LionSec/katoolin. The problem is it botched up my Ubuntu, many packages don't work anymore. System update doesn't work anymore.
The question: is there a way to somehow uninstall this from my Ubuntu without re-installing the OS??
PS: Piece of advice to people who want to study computer security: stay away from this Katoolin tool! Think at least ten times before installing it.
Judging from the comments to the question, you placed the katoolin executable not directly into /usr/bin, but in a subdirectory of it.
When you enter a command, the system searches in a number of directories for a matching executable file. If you for example type foo, the system looks for /bin/foo, /sbin/foo, /usr/bin/foo and so on. The first such file that is found gets executed. Which directories get searched is defined in the environment variable PATH.
But the system does not search in sub directories of the directories listed in PATH. Therefore, if you put the katoolin executable to, say, /usr/bin/katoolin/katoolin instead of /usr/bin/katoolin, it won't be found.
Additionally, the executable must have the correct permissions ( sudo chmod +x /usr/bin/katoolin ) and the correct name. If you type katoolin, for example /usr/bin/katoolin.py won't be found either.
The LionSec Katoolin GitHub webpage clearly warns Katoolin users to be careful when updating software.
Before updating your system, please remove all Kali-linux repositories to avoid any kind of problem.
All kinds of problems can occur if you don't do this.
Additional reference: How to install Kali linux tools in Ubuntu 15.10
Are the kali repositories necessary?
Katoolin is a script that makes it quick and easy to install may Kali linux tools at the same time, however adding Kali repositories is not always necessary. For example read this answer to a question about how to install only two Kali linux tools, which can also be easily installed without adding Kali repositories.
Adding only the Kali linux tools that you need manually is good training that teaches you how to use the other package management tools that are provided by the default Ubuntu repositories and which are safer than Katoolin because they don't add a long list of additional repositories to your software sources.
If you need to install a lot of Kali linux tools you should also consider installing Kali Linux itself, either as a dual boot or in a virtual machine. If you have done what looks like irreparable damage to your system with Katoolin, I recommend that you remove all the Kali linux repositories that you added from your software sources and with the help of the terminal history command remove all the packages that you installed with Katoolin, and start over again with vanilla Ubuntu.
Best Answer
Answer in progress
Run the Python script in
/usr/bin/katoolinagainSelect
1) Add Kali repositories & UpdateSelect
3) Remove all kali linux repositoriesRun
Remove the katoolin script
Run
Change the file like this (depending on your release):
Save and close the file.
Run
Change the file like this (depending on your release):
Save and close the file.
sudo apt-get install --reinstall software-center