doublecmd-common software package provides twin-panel (commander-style) file manager, 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 doublecmd-common
doublecmd-common is installed in your system.
Make ensure the doublecmd-common package were installed using the commands given below,
$ sudo dpkg-query -l | grep doublecmd-common *
You will get with doublecmd-common package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Utilities |
| Package | doublecmd-common |
| Version | 0.7.1-2 |
| Description | twin-panel (commander-style) file manager |
| Sub Section | Utils |