In this article we will guide you how Install Double Commander  via PPA on Ubuntu and  its derivatives.
Double Commander (DoubleCMD)
-is a cross platform open source file manager for Linux Ubuntu. It comes with two panels side by side. It is inspired by Total Commander file manager.
Features:

• Unicode support
• All operations working in background
• Multi-rename tool
• Tabbed interface
• Custom columns
• Internal text editor (F4)  with syntax hightlighting
• Built in file viewer (F3) to view files of in hex, binary or text format
• Archives are handled like subdirectories. You can easily copy files to and from archives. Supported archive types: ZIP, TAR GZ, TGZ, LZMA and also BZ2, RPM, CPIO, DEB, RAR.
• Extended  search function with full text search in any files
• Configurable button bar to start external programs or internal menu commands
• Total Commander WCX, WDX and WLX plug-ins support
• File operations logging

Changes and Updates on Double Commander 0.6.5:

• Empty variables %Dl and %Dr for the root directory
• Copying a directory to FTP and it already exists displays “Unknown error” message
• Add support for PSD (Photoshop) files when viewing files as thumbnails in the file view panels
• Samba: Copying error

To install Double Commander 0.6.5 Beta via PPA

1. Open Terminal and run the following commands:

For GTK based systems, do:
sudo apt-get install doublecmd-gtk

For Qt based systems, do:
sudo apt-get install doublecmd-qt

To uninstall and remove Double CMD file manager f, run the command:
sudo apt-get remove doublecmd-*

Enjoy….Cyah