How to apt-delete-repository?

Question

How to apt-delete-repository?

I would like to run the reverse of this command to remove the non-compatible repository in Debian 8.1

sudo add-apt-repository -y ppa:nemh/systemback

where the command add-apt-repository is in the package software-properties-common.
I could not find the systemback entry in /etc/apt/sources.list.

How can you run the reverse of the command?

Asked By: Léo Léopold Hertz 준영

||

Source

Answer 1

To remove a repository, you have to do two things:

Remove it from sources.list.

If it was added by add-apt-repository then you will find it in its own file in /etc/apt/sources.list.d, not in the main sources.list.
```
 sudo rm /etc/apt/sources.list.d/nemh-systemback-precise.list
```
Optional: Stop trusting the key

Use apt-key list to list trusted keys. Look for an entry like "Launchpad PPA for Kendek" in this case. Then use apt-key del to delete it:
```
 sudo apt-key del 73C62A1B
```

As mentioned in the comments by @SeF,
you can use the following command:

sudo add-apt-repository -r <the repo you want to remove>

Answered By: Celada