xwinsize is a simple program that prints a window's position and size. It also has a monitor option that keep listening the window and prints the window's position and size everytime the window is moved/resized.
make
sudo make install # Default install location is /usr/local
# make PREFIX=<directory> install # If you want to install at another directoryusage: xwinsize <window option> [options ...]
You must specify one of the following window options:
--name <window_name>: Select the window with the specified name
--id <window_id>: Select the window with the specified id
--root: Select the root window
The following options are optional:
--monitor|-m: Keep monitoring the window size forever, printing it everytime it changes
--help|-h: Print the command line usage