#!/usr/bin/python
# namedPipe2.py creates a named pipe  
# $ ./namedPipe2.py r <fileName> &
# $ ./namedPipe2.py w <fileName> &
import os
import sys
def main():
    try:
       os.mkfifo(sys.argv[2], 0666)
    except: OSError
    try:
       if sys.argv[1] == 'r':
          fd = os.open(sys.argv[2], os.O_RDONLY)
          data = os.read(fd, 100)
          print data
       elif sys.argv[1] == 'w':
          fd = os.open(sys.argv[2], os.O_WRONLY)
          os.write(fd, "\nWrittten in the named pipe")
    except:  print 'wrong argument'
main()