Answer :
This utility can be started and operated in the background using the watchit& command.
What do you mean by utility ?
Utility computing is a service delivery approach that provides clients with on-demand access to computer resources such hardware, software, and network bandwidth as needed. Instead of charging a set fee or flat rate, the service provider only bills for the services that are actually used. The utility computing concept was developed to make IT resources as widely accessible as conventional public utilities like electricity, gas, water, and telephone services. It is based on existing utilities. For instance, a customer only pays his electricity bill for the number of units actually used. Similar to this, utility computing utilizes the pay-per-use business model.
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