• cat /usr/share/dict/words | more

• ps

• cat ... 実行ターミナルで q

• cat /usr/share/dict/words > /tmp/mypipe

• more -f /tmp/mypipe
• こちらを q で終了すると cat も終了する

   $ cd
   $ mkdir net
   $ cd net

• エコー(echo) = こだま

   #!/usr/bin/env python
   # UNIX domain Echo server
   import socket
   import os

   PIPE = '/tmp/socket54321'
   s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
   s.bind(PIPE)
   s.listen(1)
   conn, addr = s.accept()
   print 'Connected.'
   while True:
       data = conn.recv(1024)
       if not data:
           break
       print 'Echoing:', data
       conn.send(data)
   print 'Closing.'
   conn.close()
   os.unlink(PIPE)

   #!/usr/bin/env python
   # UNIX domain Echo client
   import socket

   PIPE = '/tmp/socket54321'
   s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
   print 'Connecting %s.' % repr(PIPE)
   s.connect(PIPE)
   try:
       while True:
           t = raw_input('> ')
           s.send(t)
           data = s.recv(1024)
           print 'Received:', data
   except (EOFError, KeyboardInterrupt):
       pass
   print 'Closing.'
   s.close()

   $ chmod +x unixSocketServer.py
   $ chmod +x unixSocketClient.py

   #!/usr/bin/env python
   # INET domain Echo server
   import socket

   HOST = '0.0.0.0'
   PORT = 54321
   s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
   s.bind((HOST, PORT))
   s.listen(1)
   conn, addr = s.accept()
   print 'Connected by', addr
   while True:
       data = conn.recv(1024)
       if not data:
           break
       print 'Echoing:', data
       conn.send(data)
   print 'Closing.'
   conn.close()

   #!/usr/bin/env python
   # INET domain Echo client
   import socket

   HOST = '127.0.0.1'
   PORT = 54321
   s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
   print 'Connecting %s.' % repr((HOST, PORT))
   s.connect((HOST, PORT))
   try:
       while True:
           t = raw_input('> ')
           s.send(t)
           data = s.recv(1024)
           print 'Received:', data
   except (EOFError, KeyboardInterrupt):
       pass
   print 'Closing.'
   s.close()