Shell program implementing a subset of features of well-known shells, such as bash. Originally written for operating systems course Winter 2026.

Features include:

• Provide a prompt for running commands
• Handle blank lines and comments (comments begin with # character)
• Execute three built in commands exit, cd and status
• Execute other commands by creating new processes using a function from the exec() family
• Support input and output redirection
• Support running commands in foreground and background processes
• Custom handlers for SIGINT and SIGTSTP
  • SIGINT: parent/shell process ignores, child process terminates
  • SIGTSTP: shell enters 'foreground-only' mode