Utility programs are usually supplied along with an operating system.

They are used to carry out routine tasks that are often needed by a user such as:

• Compressing a file to save space on backing storage;
•  Defragmenting a disk drive;
•  Recovering data from damaged files;
•  Checking a disk for faults and repairing them;
•  Formatting a floppy disk;
•  Checking the files on a disk for computer viruses