If you like Notepad++ on Windows and Mac OS, you’ll like Notepadqq for Linux systems, including Ubuntu 16.04 / 17.04 | 17.10 and 18.04 when it’s released.
Notepadqq is a simple yet powerful code and text editor with support for over 100 languages. Just like Notepad++, this open-source editor is designed by developers for developers and supports multiple themes.
If you like a dark theme or a light one, you’ll find your favorite color scheme. if you’re looking for a Linux alternative to Notepad++ for Ubuntu, then install this tool.
This brief tutorial is going to show students and new users how to install Notepadqq on Ubuntu 16.04 / 17.10 and 18.04 with its release in April of the year.
Add Notepadqq PPA Repository
Before installing Notepadqq, you’ll want to add its PPA repository on Ubuntu. To do that, run the commands below
sudo add-apt-repository ppa:notepadqq-team/notepadqq sudo apt update
When you run the commands above, you will be prompted to accept and install the repository key. accept and continue
Install Notepadqq
Now that the repository is installed, run the commands to install Notepadqq
sudo apt update sudo apt install notepadqq
The commands below should install the tool on Ubuntu and be ready to use. Go to Ubuntu dash and search for Notepadqq, then select and launch it. and begin editing your codes.
Remove or Uninstall Notepadqq
If you decide that you no longer want to use this tool, you can run the commands below to remove it.
sudo apt purge notepadqq
Then run the commands below to remove its repository from Ubuntu
sudo add-apt-repository --remove ppa:notepadqq-team/notepadqq

Enjoy!
you cannot print from notepadqq in linuxmint 18.3 ?
Could not remove Notepadqq from Ubuntu 18.04 as per instructions 🙁
Remove: sudo snap remove notepadqq