import subprocess

class Interpreter(object):
	def __init__(self, text):
		self.text = text
		self.tokens = []

	def error(self):
		raise Exception('Error parsing input')

	def expr(self):
		self.tokens = self.text.split(" ")
		#return self.tokens

		if self.tokens[0] == "show":
			if self.tokens[1] == "ip" and self.tokens[2] == "route":
				f = open('/proc/net/route', 'r')
				result = f.read()
				return result
			if self.tokens[1] == "interfaces":
				result = subprocess.call(["ifconfig"])
				return result
			if self.tokens[1] == "interface":
				result = subprocess.call(["ifconfig", self.tokens[2]])
				return result
		return self.error


def main():
	while True:
		try:
			text = raw_input('cisco> ')
		except EOFError:
			break
		if not text:
			continue
		interpreter = Interpreter(text)
		result = interpreter.expr()
		print(result)

if __name__ == '__main__':
    main()