We implemented a simple shell program by using fork()/execv() system calls. This shell supports:

• Basic bash-like shell functions, such as loading and running a program
• Advanced features:
  • pipe (|) to direct output from one program as input to another program
  • I/O redirection (>) to send output to another file
• Special commands:
  • “history”, which displays the latest 100 commands typed by the user
  • “histat”, which displays the top 10 most frequently typed commands in the descending order

Programming language used in this project was C++.