How to apt-delete-repository?

Question

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?

score 282 · Accepted Answer · edited Jan 23 '23 at 08:30

282

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>

edited Jan 23 '23 at 08:30

G-Man Says 'Reinstate Monica'

22,870

answered Jul 30 '15 at 20:01

Celada

44,132

22

Note: the short key id is no longer shown when you use the apt-key list command, but it is actually the last 8 characters of the long key that is shown. – Mike Nakis Apr 06 '19 at 10:04
108

The command is sudo add-apt-repository -r <the repo you want to remove>. – SeF Oct 04 '19 at 08:00
10

I think @SeF you should make your comment an actual answer as that should be the accepted answer to this question. As a comment, albeit with high vote count, it is not given the attention it deserves. – Timo Apr 17 '21 at 19:46
2

Thanks @Timo, unfortunately no new answers are allowed for this old question. – SeF Apr 18 '21 at 21:02
1

Oh I see this has been flagged as a duplicate – Timo Apr 20 '21 at 05:20
Why does this have 262 likes? It doesn't even work. – Wolfpack'08 Nov 11 '22 at 03:43
In Debian, sudo nano /etc/apt/sources.list and delete the entry. The solution mentioned above is non-working in Debian, which is an objectively far superior OS to Ubuntu. – Wolfpack'08 Nov 11 '22 at 03:52

How to apt-delete-repository?

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