user6542: 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

user30396: the ppa for ubuntu is https://launchpad.net/~bitcoin/+archive/ubuntu/bitcoin it shows the support of ubuntu 0.13.1
so you need to run 
sudo add-apt-repository ppa:bitcoin/bitcoin
sudo apt-get update


otherwise you can compile from source 

6542: <p>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</p>
 30396: <p>the ppa for ubuntu is <a href="https://launchpad.net/~bitcoin/+archive/ubuntu/bitcoin" rel="nofollow noreferrer">https://launchpad.net/~bitcoin/+archive/ubuntu/bitcoin</a> it shows the support of ubuntu 0.13.1</p>

<p>so you need to run </p>

<pre><code>sudo add-apt-repository ppa:bitcoin/bitcoin
sudo apt-get update
</code></pre>

<p><a href="https://i.stack.imgur.com/CSG7a.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/CSG7a.png" alt="enter image description here"></a>
otherwise you can compile from source </p>
