Restoring Ubuntu 20.10 Repos
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4. Restoring Default Sources
Restore Ubuntu Groovy Repo
Remove the Repo:sudo rm /etc/apt/sources.list.d/extra.list
And finally, to Restore the Default Sources:
sudo apt update
Authenticate with the User Admin Pass.
If Got “User is Not in Sudoers file” then see: How to Enable sudo.
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