With this command:
sudo add-apt-repository ppa:<ppa_name>
which needs an extra software package:
- On Ubuntu >=14.04:
sudo apt-get install software-properties-common - On Ubuntu <=12.04:
sudo apt-get install python-software-properties - On the rest, you have to discover.
Debian APT info is stored in /etc/apt/sources.list and /etc/apt/sources.list.d/:
$ ls -lah /etc/apt/sources.list.d/
total 32K
drwxr-xr-x 2 root root 4.0K Feb 9 13:27 .
drwxr-xr-x 6 root root 4.0K Feb 9 13:27 ..
-rw-r--r-- 1 root root 100 Feb 9 13:27 nodesource.list
-rw-r--r-- 1 root root 66 Feb 9 13:08 ppa_chris_lea_node_js_trusty.list
-rw-r--r-- 1 root root 84 Feb 9 13:08 ppa_leonard_ehrenfried_apt_transport_s3_trusty.list
-rw-r--r-- 1 root root 61 Feb 9 13:08 ppa_nginx_stable_trusty.list
-rw-r--r-- 1 root root 45 Feb 9 13:08 repos_sensuapp_org_apt.list
-rw-r--r-- 1 root root 257 Feb 9 13:08 s3_eu_west_1_amazonaws_com_relayr_apt.list
$ less /etc/apt/sources.list
Maybe there is a way of doing this nicer, but I don't know it atm.
Either with:
sudo add-apt-repository --remove ppa:whatever/ppa
Or alternatively, after installing the ppa-purge tool (sudo apt-get install ppa-purge), with:
sudo ppa-purge ppa_name
If supported by the official distribution this will downgrade packages. If not, this will not remove them.[1]
References: