Case scenario:
When I open my terminal, screen starts automatically. This is useful because I often need multiple screens locally within the same terminal.
However, if I connect via SSH to a server and want to start a screen session on that server, it will create a local screen session instead.
i.e I want a parent (local screen) /children (remote screens) relationship between (or equivalent) instead of multiple SSH connections via local screens
If you want to run screen within another screen, you need to change screen control character combination (by default it's Ctrl + a).
Typically the first (outer) screen would be controlled with "Ctrl+a" (default), ie press "Ctrl+a" then "?" or "c"
Start screen within the screen (inner) with alternative control character, ie:
screen -e^Xx Then you'd press "Ctrl+x" then "?" or "c" to operate inner screen.
CTRL-A A, and then whatever you want to the far system. It is a pain though. Here is how:
Notice the @local vs @remote
user@local:$> screen
<Ctrl-a> c and a new local window is created
user@local:$> ssh user@remote
user@remote:$> screen
<Ctrl-a> a c and a new remote window is created
user@remote:$>
<Ctrl-a> c and a new local window is created
Basically <Ctrl-a> a [your screen command] allows you to call the sub-screen
~.it will detach you from the session closest to you. Each level you want to pass through you need to add an initial character. So for closing a nested ssh session you would~~..