Shutter is a shutdown utility that can automatically perform various shutdown operations including reboot, log off, hibernate etc. and also turn off your monitor or trigger an alarm. In addition, theprogram can also play a custom sound and/or run a program of your choice, in addition to a simple shutdown message. These actions can be triggered by a number of events, such as a countdown, user inactivity, low CPU usage, low battery, and more, or on a specific time of day, as well remotely via a web interface. Shutter can only be used to run a single task at a time, you cannot create multiple event/action scenarios.