a shell, written for cs3600

• trimstr(Adam)
• Parsing(Liam
  • break input lines on semi-colons into an array
  • break commands on spaces for args
• display prompt correctly, read from prompt
• fork and execute processes
• Background process handling
• Complex I/O redirection
• Pass the final Milestone test
• Handling interrupts (optional)
• Handling escape characters
• Passing the final project tests and stress tests
• FIX MAKEFILE SO THAT IT COMPILES TREATING WARNINGS AS ERRORS, AND MAKE SURE EVERYTHING STILL WORKS

• The Make File
  • To compile the shell, run 'make' or 'make all'
  • To compile the unit tests, run 'make unittests'
  • To compile and run the shell, run 'make run'
  • To compile and run the unit tests on the shell, run 'make utest'
  • To compile the shell and run the given tests, run 'make test'
  • To remove any executables, run 'make cleanall'
  • To compile and run gdb on the unit tests, run 'make debug_utest'
  • To compile and run gdb on the shell, run 'make debug_shell'
• Compiling
  • Upon compiling, executables are created in a bin directory within the current directory
• What the shell supports
  • The shell supports commands found in PATH, I/O redirection, and background process
  • Any number of arguments of any length may be supplied
  • The escape characters '\ ', '\t', '\', '&'
  • To give multiple commands in one line, place an semi-colon after each command. Otherwise, an error will be thrown
  • Although unadvised, you may place extra spaces through the given command(s). They will simply be removed.
  • By default, commands will be run in the foreground. In order to change this for a particular command, place an ampersand(&) at the end of the command (before any semi-colons as well
  • In order to exit the shell, simply type 'exit' and hit enter
  • This shell support interrupts, and so should return to 3600sh when pressing Ctrl+C (may need to remove this bullet should we decide not to implement it)