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Making graphics via code

tikz is a nice option. It has many guis. No one here has much experience with it.

Connecting to remote displays:

xpra: screen for X https://www.xpra.org/

also compresses better than regular X-forwarding

nxmachine: non-free version (maybe less good)

Also for remote machines when you don't want to see what's displayed:

"X virtual frame buffer":

$ Xvfb :15 &
$ # do gui things here: they will not be displayed onscreen

Terminals on remote machines:

screen: https://www.gnu.org/software/screen/
- help: ctrl-a ?
- configuration: ~/.screenrc
tmux: terminal multiplexer https://tmux.github.io/
- help:
byobu http://byobu.co/
- help:

SSH tunneling

A few methods:

Set up everything in your ~/.ssh.config file:

    host myhostname
    user myusername
    HostName ahostname.domainname.org
    LocalForward 2022 computer1.domainname.org:22
    LocalForward 2024 computer2.domainname.org:22

    host computer1
    HostName localhost
    Port 2022
    # ForwardX11 Yes   # optionally, always X-forward
    User myusername

Then you would use it like so:

# open the tunnel
ssh myhostname   # can use ssh -f myhostname to send this to the background
# ssh into your machine!
ssh computer1
# copy files from remote machine to local
rsync computer1:/path/to/stuff .

Or you can manually specify machine names and ports:

   ssh -N -f -C -L 2022:computer1:22 myusername@ahostname.domain.org
   ssh -p 2022 myusername@localhost
   rsync -e 'ssh -p 2022' aginsbur@localhost:/path/to/stuff .

This is clearly less convenient.

TODO: figure out how to configure #1 so that you can do ssh myhostname (within the network) or (outside the network with tunneling on)