screen command is a nice program for us to run process background, but I found
Ctrl + a w do not show screen windows list in xshell(Xmanager component) and
Ctrl + a k do not kill this screen terminal for me. However
Ctrl + a d to dettach session works! So what's wrong with
Ctrl +a w to list sessions?
More serious, How do I know whether I am in screen window or normal bash window? Many times I try to dettach screen session, I got logout after
ctrl+a d. Very embarrassing isn't it? So is there any hints to show me whether am I in a screen window or just normal tty terminal?