There is not a getenv command to match setenv iirc. There's a -Q flag for query - z=$(screen -S $STY -Q echo '$SSH_AUTH_SOCK')
Getting the shell quoting correct will probably be pretty fiddly though. On Wed, Dec 16, 2020 at 7:09 AM Michael Grant <mgr...@grant.org> wrote: > > When I reattach to screen, the SSH_AUTH_SOCK is wrong. > > > > I often ssh in and run screen simultaneously on a laptop and desktop. So I > can’t use the trick of symlinking something to /tmp/ssh-xxxxxxxxxx. > > > > Is there some way to interrogate screen to tell me what the contents of an > environment variable are? > > > > Running this in a shell inside of screen: > > > > screen -S $STY -X colon 'exec |echo $SSH_AUTH_SOCK\r' > > > > gives me the info I’m looking for, but it pushes it out to the display. I’m > so close! How can I capture this output? > > > > My goal here is to create a sort of ssh/scp pre-command as a shell alias that > probes screen each time and sets the SSH_AUTH_SOCK variable correctly.
