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While I was upgrading from 18.04 to 20.04, dpkg was interrupted, I fixed dependency problems, but a problem left unsolved. Today, while I was upgrading my system with Synaptic package manager, it crashed, then I again fixed dependency issues. But when tried to run pip3 , it says:

Command 'pip3' not found, but can be installed with:

sudo apt install python3-pip

I was sure that python3-pip is installed, but I followed the instruction which gave this output:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
python3-pip is already the newest version (20.0.2-5ubuntu1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

So, I reinstalled python3-pip and pip3 started working. But I suspect that this has occurred with many packages, so I want to reinstall all installed package with the following command:

sudo apt list --installed | sed 's/\// /' | awk '/\[installed\]/{print $1}' | sudo xargs apt install --reinstall -y

Should I do this? Is it good idea?

Edit: My question is similar to Upgrade manager wants me to do a partial upgrade, but I have already done those things but resulted in nothing.

Edit: I want to do this because @heynnema suggested me to reinstall Ubuntu after knowing the whole history of the previous problem, all in comments and chat.

Edit: Thanks to @bac0n, now I can understand which packages are affected after seeing the output. Packages that are affected are mostly python2.7 modules.

Akib Azmain Turja
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  • What is your '/etc/apt/sources.list' output? Does it say 'fossa' in place of 'bionic'? – Arijit Chatterjee Aug 16 '20 at 12:39
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    Your previous problem was faulty hardware, not Ubuntu, so I don't see how this tedious (and disk-intensive) process accomplishes anything useful. – user535733 Aug 16 '20 at 12:44
  • @user535733 But this time it is software related. – Akib Azmain Turja Aug 16 '20 at 12:49
  • You are proposing a rather severe solution without explaining what problem it's intended to fix. So far, you have showed us a single package that needed to be reinstalled...and was. Are you encountering similar behavior from other packages? – user535733 Aug 16 '20 at 12:53
  • @user535733 None till now, but I suspect there are many as dpkg was interupped at middle stage. Also after knowing the whole history of previous problem through comments and chat, heynnema suggested to reinstall Ubuntu. It will reinstall whole system and data won't be lost. – Akib Azmain Turja Aug 16 '20 at 13:04
  • One or two problems might be worth fixing. Heynnema seems to know more than I do, so would suggest using his fix. Your upgrade did not go well and had a crash when updating, so a reinstall would be faster than trying to fix problems as they show up. – crip659 Aug 16 '20 at 13:28
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    before reinstalling you should take a look at debsums. –  Aug 16 '20 at 19:56

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