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I just downloaded opera-stable_56.0.3051.99_amd64.deb from https://www.opera.com/de/download

and ran 

sudo dpkg -i opera-stable_56.0.3051.99_amd64.deb

It complained about some missing dependencies so I ran

sudo apt-get -f install
sudo apt install apt-transport-https

then reran

sudo dpkg -i opera-stable_56.0.3051.99_amd64.deb

anyway, am worried about what evil that has done to my otherwise clean debian distribution and how to undo it. At the least it has replaced the firefox which used to launch from the icon at the bottom of xfce with itself.

Actually, the command under the button is:

exo-open --launch WebBrowser %u

..so no opera keyword.

How do I get it back to how it was and if necessary clean up anything else bad which it might have done?

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1
  • Thanks for the upvote and the accept: favour returned: question upvoted! ;-) – Fabby Nov 8 '18 at 14:57
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When installing software, always use the same methodology to remove said software as you've installed it with... (true on any OS) 0:-)

Therefore it's always a good idea to install from Debian pre-packaged repositories until you have a bit more experience. ;-)

In this case, to uninstall opera:

sudo dpkg --remove opera-stable

to then get rid of any dependencies you now no longer need, run:

sudo apt autoremove && sudo apt autoclean
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  • Thanks, it's fixed, the button in xfce launches firefox again not opera. Also, a few worrying lines after the clean: apt/sources.list.d/opera-stable.list , apt/trusted.gpg , cron.daily/opera-browser how evil, opera created some kind of daily cron job.. why does a browser need a cron job? – cardamom Nov 8 '18 at 14:59
  • Wow! (I never tried Opera, but noting now never to try...) Danke für die extra Informationen! ;-) – Fabby Nov 8 '18 at 15:02
  • But why opera set itself as default without asking? :) – GAD3R Nov 8 '18 at 15:57
  • Because that's what the .deb package did??? @GAD3R :P ;-) – Fabby Nov 8 '18 at 16:10
  • @Fabby I think because its a non-free software , the defaut web browser is changed without asking the user for. Not sure about. – GAD3R Nov 8 '18 at 16:35

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