gtkcookie software package provides editor for cookie files, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gtkcookie
gtkcookie is installed in your system.
Make ensure the gtkcookie package were installed using the commands given below,
$ sudo dpkg-query -l | grep gtkcookie *
You will get with gtkcookie package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | X Window System software |
| Package | gtkcookie |
| Version | 0.4-5 |
| Description | editor for cookie files |
| Sub Section | X283 |