xwininfo — Display information about windows. See also: `xprop`, `xkill`. More information: <https://www.x.org/

Display a cursor to select a window to display its attributes (id, name, size, position, ...)

xwininfo

Display the tree of all windows

xwininfo -tree -root

Display the attributes of a window with a specific ID

xwininfo -id {{id}}

Display the attributes of a window with a specific name

xwininfo -name {{name}}

Display the ID of a window searching by name

xwininfo -tree -root | grep {{keyword}} | head -1 | perl -ne 'print $1 if /(0x[\da-f]+)/ig;'