how install pcmanfm ubuntu

ubuntu

pcmanfm

extremely fast and lightweight file manager
http://pcmanfm.sourceforge.net/
Install sudo apt install pcmanfm
Description:

PCMan File Manager is a GTK+ based file manager, featuring:

* Extremly fast and lightweight
* Can be started in one second on normal machine
* Tabbed browsing (similar to Firefox)
* Drag & Drop support
* Files can be dragged among tabs
* Load large directories in reasonable time
* File association support (Default application)
* Basic thumbnail support
* Bookmarks support
* Handles non-UTF-8 encoded filenames correctly
* Provide icon view and detailed list view
* Standard compliant (Follows FreeDesktop.org)
* Clean and user-friendly interface (GTK+ 2)
* Support GVFS for auto-mount handling on removable devices