How to remove or delete a PPA in Ubuntu

PPAs (Personal Package Archive) are third-party collections of packages built and maintained by users.

How to list PPAs installed on the system

1ls /etc/apt/sources.list.d/
2neovim-ppa-unstable-jammy.list

How to remove a PPA using terminal

The recommended way to remove a PPA is to use the apt-add-repository command with the --remove (or -r) option.

1sudo apt-add-repository --remove ppa:PPA_REPOSITORY/PPA

Example:

1sudo apt-add-repository -r ppa:neovim-ppa/unstable