# File: cmd-example-1.py

import cmd
import string, sys

class CLI(cmd.Cmd):

    def __init__(self):
        cmd.Cmd.__init__(self)
        self.prompt = '> '

    def do_hello(self, arg):
        print "hello again", arg, "!"

    def help_hello(self):
        print "syntax: hello [message]",
        print "-- prints a hello message"

    def do_quit(self, arg):
        sys.exit(1)

    def help_quit(self):
        print "syntax: quit",
        print "-- terminates the application"

    # shortcuts
    do_q = do_quit

#
# try it out

cli = CLI()
cli.cmdloop()

## $ python cmd-example-1.py
## > help
## 
## Documented commands (type help <topic>):
## ========================================
## hello           quit
## 
## Undocumented commands:
## ======================
## help            q
## 
## > hello world
## hello again world !
## > q