Pythonでデーモンを作る(プロセスを守る)方法

2014年7月12日

Pythonコード：
def createDaemon():
”’ determinato programm…”’

import os

# create – fork 1
try:
if os.fork() > 0: os._exit(0) # exit father…
except OSError, error:
print ‘fork #1 failed: %d (%s)’ % (error.errno, error.strerror)
os._exit(1)

# it separates the son from the father
os.chdir(’/’)
os.setsid()
os.umask(0)

# create – fork 2
try:
pid = os.fork()
if pid > 0:
print ‘Daemon PID %d’ % pid
os._exit(0)
except OSError, error:
print ‘fork #2 failed: %d (%s)’ % (error.errno, error.strerror)
os._exit(1)

funzioneDemo() # function demo

def funzioneDemo():

import time

fd = open('/tmp/demone.log’, 'w’)
while True:
fd.write(time.ctime()+’\n’)
fd.flush()
time.sleep(2)
fd.close()

if __name__ == '__main__’:

createDaemon()