This question might have been asked before but I don't see it.
screen ssh to remotely start processes that take multiple days. I ssh in, start multiple processes in the background, and detach with CRTL+A d. I don't know why, but after a certain amount of time 'screen -r' doesn't resume the screen, although the process is still running (I can
scp the data it's producing; all looks good). That's fine.
However, the jobs are very processing heavy and I want to be able to stop them. How do I do that? Like I said,
screen -r doesn't work. ssh'ing in again and typing
ps doesn't show them.