#!/usr/bin/env python
import rospy
from std_msgs.msg import String
from geometry_msgs.msg import Twist

#def getKey():
 #   tty.setraw(sys.stdin.fileno())
  #  select.select([sys.stdin], [], [], 0)
   # key = sys.stdin.read(1)
    #termios.tcsetattr(sys.stdin, termios.TCSADRAIN, settings)
    #return key


def talker():
    pub = rospy.Publisher('chatter', Twist, queue_size=10)
    rospy.init_node('talker', anonymous=True)
    rate = rospy.Rate(10) # 10hz
    while not rospy.is_shutdown():
	msg = Twist()
	msg.linear.x = 2
	msg.linear.y = 0
	msg.linear.z = 0
	sg.angular.x = 0
	msg.angular.y = 0
	msg.angular.z = 0
        #key = getkey()
        rospy.loginfo(key)
        pub.publish(msg)
        rate.sleep()

if __name__ == '__main__':
    try:
        talker()
    except rospy.ROSInterruptException:
        pass