What are the essential features of the Unix operating system?

• It is a multi-user, multitasking system
• Uses kernel and shell to execute commands and complete tasks
• Hierarchical file system
• Easily portable to other machines as the code can be easily changed and compiled.
• Has pipes and filters to divide complex tasks into smaller utilities and then combine them.
• Application code is independent of the hardware vendor.

Continue reading our Unix interview questions list to know more about each of these features.