Recently ran into an issue where I was running a screen session in an
existing screen.
My usual workflow is to start a new screen session each day using a custom screen startup script (since I have some env vars I’d like to renew each day).
I had to then ssh into a remote machine and run a daemonized job in screen that wrote some output I needed to revisit.
The problem arose in that when I tried to detach from the inner screen, I ended detaching from the original screen I had started on my local machine. After some quick googling, I found this.
Since the inner screen was started on a remote machine that didn’t have my
.screenrc, the
global escape option was still the default ctrl-a, and I didn’t need to go
through the usual hoops when detaching from the inner screen.
Reference for myself:
local$ screen-start # start screen session
local$ screen -x # attach to screen
local$ ssh remote # in orig screen
remote$ screen -dmS 'foo.sh' foo.sh # start/attach new daemonized screen
remote$ ^ad # detach from inner screen
remote$ ^d # logout from remote machine
local$ # back to local machine in orig screen
Can also do:
$ screen -d -D