Today my boss (the president of the company I work to) send me some CorelDraw files with logos of our client. Unfortunately none Vector Graphic editor for Linux (Inkscape, XaraLX, etc) could open it.
Then I decide to search a solution to open these .cdr files. Finally I found it:
Fortunately the UniConvertor is already integrated on Ubuntu:
$ sudo apt-get install python-uniconvertor
It is very easy to use:
$ uniconvertor drawing.cdr drawing.svg