I was connected by ssh to my server, running
aptitude upgrade, and, during the process, my Internet connection was off.
After reconnecting, the aptitude upgrade command was still running:
$ ps aux | grep apt root 15186 0.0 0.0 68996 2108 ? S 14:09 0:00 sudo aptitude upgrade root 15187 3.9 1.4 262328 119080 ? Sl 14:09 0:17 aptitude upgrade
and dpkg process is in locked state. Probably, the command is waiting for a confirmation to install the upgrades (the usual Y/n question).
How can I recover the process control to finish the command cleanly? ("connect" again to the standard input of the process to press 'Y').
If there's no way to do it, how safe is to just make a force kill of the upgrade by PID?
NOTE: I'm aware of
reptyr to bring any process to foreground, but since I don't have currently that package, this is not a solution because I cannot use
dpkg or its derivates to install new packages because it is in blocked state.