That will be great. In the "@TODO" part you will see that I still need to take the output from the command and capture that into a file. Can you help me with that?
Johan Alan Gauld wrote: > Thanks, I may use that as one of the example programs if > you don't mind? > > Alan G. > > > ----- Original Message ----- From: "Johan Geldenhuys" > <[EMAIL PROTECTED]> > To: "Alan Gauld" <[EMAIL PROTECTED]> > Cc: "Python Tutor list" <tutor@python.org> > Sent: Wednesday, November 16, 2005 8:12 AM > Subject: Re: [Tutor] new topic draft > > >> Alan, >> >> You may remember that I asked questions on killing a process, a while >> back, >> >> Sice this is relatedto the tutorial that yu are writing, this was the >> best solution that worked for me to killa process for a command that >> keeps on running like eg. 'tcpdump'. >> >> HTH >> >> Johan >> BTW, There will a be many a felllow Pythonists that will benefit from a >> tut like this, great work !! >> >> >> Alan Gauld wrote: >> >>> I've just added an incomplete draft copy of my latest tutorial topic >>> on using the Operating System from Python. The material that's >>> there discusses the role of the OS and looks at file handling >>> usng os/os.path/shutil etc. >>> >>> http://www.freenetpages.co.uk/hp/alan.gauld/tutos.htm >>> >>> If anyone would like to take a look and provide feedback on >>> general direction/depth etc that'd be greatly appreciated. >>> >>> TIA, >>> >>> Alan G >>> Author of the learn to program web tutor >>> http://www.freenetpages.co.uk/hp/alan.gauld >>> >>> >>> _______________________________________________ >>> Tutor maillist - Tutor@python.org >>> http://mail.python.org/mailman/listinfo/tutor >>> >>> >>> >> > > > -------------------------------------------------------------------------------- > > > > >> """ >> This class will execute the command, let it run for 5 seconds and >> kill the process. >> >> ::Author: Johan Geldenhuys >> [EMAIL PROTECTED] >> >> ::Version: 0.0.1 >> >> ::Date last updated: 2005-11-03 >> >> ::Changes: >> >> :: TODO: Capture the output from line 41 to a file. >> """ >> >> import os, signal, time >> >> class command(object): >> >> def __init__(self): >> >> pass >> >> >> def kill(self, pid, signal=signal.SIGTERM): >> try: >> >> print "trying to kill pid...", pid >> os.kill(pid, signal) >> #os.waitpid(pid, 0) >> print "Killed %d"%pid >> except: >> print "couldn't stop process" >> >> def main(self, interface): >> >> self.interface = interface >> self.pid = os.fork() >> >> if self.pid == 0: >> >> os.execvp('tcpdump', ['tcpdump', '-npi', self.interface]) >> >> print 'PID: ',self.pid >> print 'Let it run for 5 seconds...' >> time.sleep(5) >> self.kill(self.pid) >> >> >> if __name__ == '__main__': >> print "starting test" >> c = command() >> c.main('eth0') >> >> > > _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
