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  1. Servers: Unix systems were widely used as servers, providing services such as file and print serving, email, and web serving.
  2. Engineering and Scientific Computing: Unix systems were popular in engineering and scientific computing, with applications such as computer-aided design (CAD), computational fluid dynamics (CFD), and data analysis.
  3. Financial Services: Unix systems were used in financial services, supporting applications such as transaction processing, accounting, and risk management.
  4. Education: Unix systems were widely used in education, providing a platform for teaching computer science, engineering, and other technical disciplines.

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