Thanks for your reply.
Additionally, I realise that I put a wrong video link in my initial question, the video I followed is this one. The folder you had in this video contained the file “Makefile-Linux-Mono”, whereas now I could not find a version to download that contains “Makefile-Linux-Mono”.
I want to install Open XML SDK on my Ubuntu server, it is because I have a C# application that uses Open XML SDK, and this application together with other applications (better hosted in Linux than in Windows) builds a web service. So to conclude, I should give up the idea of putting this C# application in Ubuntu server? I should try to make everything work in a Windows Server?
Cheers
Timur
