Hi
Johan Geldenhuys wrote:
> Hugo,
>
> I see that 'os.execcvp()' doesn't actually make two seperate processes.
> This is what I have working now:
> """
>
> import os, signal, time
> pid = os.fork()
> print 'pid; ',pid
> if pid == 0: #child process
>#os.execvp('tcpdump', ['tcpdump',
Hi
Johan Geldenhuys wrote:
> Hugo,
>
> I see that 'os.execcvp()' doesn't actually make two seperate processes.
> This is what I have working now:
> """
>
> import os, signal, time
> pid = os.fork()
> print 'pid; ',pid
> if pid == 0: #child process
>#os.execvp('tcpdump', ['tcpdump',
Hugo,
I see that 'os.execcvp()' doesn't actually make two seperate processes.
The advice you gave me works good. I just had to fgure out with what
params I should call it. I'm still a bit unsure of how to call the sysem
command with more than one argument.
This is what I have working now:
"""
In UNIX, you use the fork() exec() technique for starting a new process,
from the very first process(init) onwards. The os.system() uses a shell
to do that, or you may do it yourself (in your script)
A "command" is just an executable file running(process), unless you've
got a library function
Sorry for the late reply,
But is it necessary to use a child process? I don't want to execute the
command in another process. What happens with the parent process and how
do I execute my command in the parent process?
Thanks
Hugo González Monteverde wrote:
> Hi,
>
> os.system will return the e
Hi,
os.system will return the errorval of the application. You need to
1) get the pid of the child process
2) kill it using os.kill(os.SIGTERM)
3) reap the killed process
This is all in unix/linux, of course.
what I do (untested, please check order of args and correct usage of exec):
pid = os.
So, for a newbie like me I might struggle with this one :-(
I saw that the thread in comp.lang.python talks about a deamon flag for
a thread. This sounds like a idea that could work. I don't know how to
use that, but will use the example given there.
Thanks.
Kent Johnson wrote:
Johan Ge
Johan Geldenhuys wrote:
> I have script that calls a system command that I want to run for 5 minutes.
> """
> import os
> cmd = 'tcpdump -n -i eth0'
> os.system(cmd)
> """
>
> I can start a timer after the cmd is issued, but I don't know how to
> send a control signal to stop the command after I
I have script that calls a system command that I want to run for 5 minutes.
"""
import os
cmd = 'tcpdump -n -i eth0'
os.system(cmd)
"""
I can start a timer after the cmd is issued, but I don't know how to
send a control signal to stop the command after I issued it. This is
normally from the shel
