Investigating X Window Properties with Command

/usr/bin/xwininfo -or- xwininfo

The command that can be used to investigate the properties for a particular window in X by clicking that window is xwininfo.

xwininfo is a command-line tool that provides information about X windows. When executed, it opens a small window and waits for the user to select a window by clicking on it. Once a window is selected, xwininfo prints out detailed information about that window, including its position, size, border width, and other properties.

The output of the xwininfo command can be quite verbose and may include a lot of information. To make it more readable, it is often useful to redirect the output to a file or to pipe it through a pager such as less.

For example, to investigate the properties of a particular window, you can follow these steps:

1. Open a terminal window.
2. Type xwininfo and press Enter.
3. Click on the window you want to investigate.
4. Examine the output that is printed to the terminal.

Alternatively, you can use the -root option to get information about the root window (the entire screen) instead of a specific window. For example, xwininfo -root will print information about the root window.

Note that the xwininfo command requires an X server to be running. If you are using a remote system, you may need to use an X11 forwarding tool such as ssh -X to forward X traffic to your local system.