@user3140225 Thanks for the info!

So what would be the appropriate command to use?

@technastic_tc I am not sure, since I cannot try it myself. Furthermore, the user says that they don't remember how they installed the theme and it could be by using a PopOS ppa. If they did install it that way, many things may have been updated to versions different than the Ubuntu-supported ones, thus the problem.

Right now I am not willing to try the PopOS ppa, since from what I've read about it here many things can go wrong with it and I can't afford losing time for this kind of troubleshooting.

If the person removes the PPA, the issue will be solved?

I am not sure, because the packages that were upgraded by the ppa won't be automatically downgraded, unless they had ppa-purge installed when they added the ppa and they remove it with it.

hmm.. we can see the terminal history right?

what's the command to see the terminal history?

I just now saw the answers on the suggested duplicate questions. They say, more or less, the above things. Also, the user says that they tried what was mentioned here and didn't work.

@technastic_tc It's history.

will this answer be helpful? askubuntu.com/a/1266235/1103140

They say they tried it.

I didn't get you..

"UPDATE-: I did what was mentioned in System settings won't open on Ubuntu 20.04 LTS after adding System76/pop PPA and now my settings menu is not visible as gnome-control-center is uninstalled and now when I try to install it output this.."

hmm..

@user3140225 Is this solution ok to find the history of commands? askubuntu.com/a/160751/1103140

@user3140225 The OP didn't mention which solution they used.. probably they followed the steps of the accepted answer

@technastic_tc Yeah. Another simple way is to output the history contents to a file using: history > history.txt

@technastic_tc Maybe. It's worth asking if they tried the ppa-purge one.

However, if they have removed the ppa already, I am not sure that ppa-purge would do something,

If you want, you can read here about ppa-purge: askubuntu.com/questions/309966/…

@user3140225 will it have all the commands history or limited?

Is there any command to find out the list of PPAs present in one's computer?

@technastic_tc Most probably limited. History holds a specified number of commands.

@user3140225 If the OP removed the PPA, can they add it once again and try ppa-purge or is it pointless?

@user3140225 where will the file be saved?

@technastic_tc This is a nice command to list all repositories: grep -r --include '*.list' '^deb ' /etc/apt/sources.list /etc/apt/sources.list.d/

(Taken from here)

@technastic_tc I thought about it, but I have no idea. I've never tried that.

@user3140225 The file has the last 1000 commands.. I think that will be more than enough..

@technastic_tc In the user's current directory. You can run it as history > ~/history.txt to save it to your home. In general it's history > /path/to/dir/history.txt, where /path/to/dir/ is the directory in which you want the file to be stored at.

@technastic_tc It could be.

@user3140225 ok..

@user3140225 oh..

Thanks a lot for the help :)

@technastic_tc No problem! I hope you manage to solve the user's issue!

@user3140225 :)

yes we are the greatest. :)

please can someone mark this as dublicate? askubuntu.com/questions/1283769/…

@nobody Done and closed.

Thanks @user3140225

@nobody you're welcome