Start tmux session for S&C from BakingTray menu

[raacampbell]

System settings file should contain analysis machine name and user name. There should be a shared SSH key from Windows command prompt to allow passwordless SSH to this account. From this it is possible to write MATLAB functions that do the following:

1. Check that connection to the machine is possible.
2. List available tmux sessions
3. Find an existing tmux session named after the acquisition machine
4. Open a command window, ssh to the machine, start tmux and attach to the existing seesion or create one named so.

Bonus points if we can first look through available open windows and find a window that already has the tmux connection open.

Should probably allow for multiple analysis PCs, just in case someone has a backup or something like that. So we add a friendly-name for each and import cell arrays from the YAML file. The first is the default. so, for example, we could have machineA then machineB in that order in the YAML. Then running bakingtray.syncandcrunch.checkDiskSpace will work on machineA and we could ask for machineB by suppling that as an input argument. That should future-proof us enough for now.

[raacampbell]

Notes on getting this to work:

This seems to work from a Mac to Send command to remote tmux session:
https://unix.stackexchange.com/questions/716978/how-to-send-a-command-to-tmux-session-of-remote-device-using-ssh

Todo: test on Windows!

Add BT menu option to automatically start and open tmux session.

We can date stamp the syncandcrunch messages.

We can read the tmux buffer from Linux over SSH.

Process:
at windows prompt:

C:\Users\shopp>ssh-keygen
C:\Users\shopp>scp .ssh\id_rsa.pub rob@joiner.mrsic-flogel.swc.ucl.ac.uk:~/

Then copy contents into joiner .ssh/authorized_keys

Now in MATLAB this works!

>> system('ssh rob@joiner.mrsic-flogel.swc.ucl.ac.uk ls -l')

This starts a windows command prompt and lists files on joiner

start cmd /k ssh rob@joiner.mrsic-flogel.swc.ucl.ac.uk ls -l

This automatically connects to joiner
start cmd /k ssh rob@joiner.mrsic-flogel.swc.ucl.ac.uk ls -l

This connects to machine and starts a named tmux session

start cmd /k ssh  rob@joiner.mrsic-flogel.swc.ucl.ac.uk -t tmux attach -t test

Start MATLAB in a new tmux session and attach to it

$ tmux new-session -d 'matlab' \; attach

start MATLAB in a new tmux session in the background

$ tmux new-session -d 'matlab' \; 

Run a command in a tmux session named 'test'

tmux send-keys -t test 'ls -l' ENTER