1 example for wmctrl

{{ score }} 
  # Get a list of windows controlled by your window manager
wmctrl -l

# Close a specific window by the title, or a substring of the title
# Useful to close windows on non-visible workspaces
wmctrl -c "firefox"

# The default behaviour of -c may be ambiguous in the case of multiple browser
# instances, for example
wmctrl -F -c "Facebook - Mozilla Firefox"
  Submitted by anonymous user over 7 years ago [permalink]