tools/tee

   1 #! /usr/bin/python
   2
   3 import os
   4 import sys
   5 from select import select
   6
   7 targets = [sys.stdout]
   8 for filename in sys.argv[1:]:
   9         f = open(filename, "w")
  10         targets.append(f)
  11
  12 targetfds = []
  13 for f in targets:
  14         targetfds.append(f.fileno())
  15
  16 src = sys.stdin.fileno()
  17 while 1:
  18     (r, w, x) = select([src],[],[])
  19     str = os.read(src,1)
  20     if str == '':
  21         break
  22
  23     for fd in targetfds:
  24         os.write(fd, str)
  25
  26 for f in targets:
  27         f.close()