------ On Ubuntu and Linux Mint ------
$ sudo add-apt-repository ppa:deluge-team/stable
$ sudo apt-get update
$ sudo apt-get install deluge

$ sudo apt install deluge    [On Debian]
$ sudo pacman -S deluge      [On Arch Linux]
$ sudo dnf install deluge    [On Fedora]
$ sudo zypper install deluge [On OpenSUSE]