Command line interpreter implemented in Python.
- cd [dir]
- pwd
- time command
- clr
- dir [dir]
- environ
- echo [comment]
- help
- quit
- bg
- fg
- jobs
- set var val
- shift
- test
- umask [mask]
- unset var
Redirection: for built-in commands
Pipeline
Background
Batchfile: python shell.py BATCHFILE