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I have been running Bitcoin Core 0.12.1 for many months - using Ubuntu (Linux). Decided to upgrade to SegWit version - 0.13.1 - today. Downloaded and extracted the files (on my Ubuntu / Linux system) but can't get it to run - there is no executable file. Can anyone help? Many thanks, D

Many thanks - very grateful for the trouble you have gone to to reply. – user6542 – 2016-12-13T20:07:52.517
Have done all that - still no bitcoin client (if that is what it is called) - i.e. no bitcoin core wallet appears – user6542 – 2016-12-13T21:49:36.450
did you installed bitcoind and bitcoin-qt using sudo apt-get install bitcoin-qt? the gui wallet is runned using bitcoin-qt – Badr Bellaj – 2016-12-13T21:57:21.053
That did the trick - many thanks - I really am most grateful for your help. By the way, can you recommend a book on Linux terminal commands for a beginner like me? – user6542 – 2016-12-14T08:44:23.477
I have accepted it - many thanks once again - you have been a great help. – user6542 – 2016-12-14T21:14:54.883