Getting pid and details for topmost window

Question

Does anyone know how to get the PID of the top active window and then how to get the properties of the window using the PID? I mean properties like process name, program nam

Answer 1

I am voting up Michel Kogan’s answer, and adding this concise summary of it:

ps -o pid,comm,args $(xprop -id $(xprop -root -f _NET_ACTIVE_WINDOW 0x " \$0\\n" _NET_ACTIVE_WINDOW | awk "{print \$2}") -f _NET_WM_PID 0c " \$0\\n" _NET_WM_PID | awk "{print \$2}")

The above will show the following for the currently active window: PID, command name (only the executable name), command with all its arguments.