Daemonizing a python programme.

[Coy Krill]

William Annis wrote:

> Coy Krill <ckrill at qvlinc.com> writes:
> >         # get our own session and fixup std[in,out,err]
> >         os.setsid()
>
>         I include these here:
>
>         os.chdir(some_sensible_root_dir_for_core_files)
>         os.umask(000)     # or whatever seems sensible
>

Thanks, I'll incorporate these ideas as well.

> >         sys.stdin.close()
> >         sys.stdout = NullDevice()
> >         sys.stderr = NullDevice()
>
>         This is curious.  Why not just close down STDOUT and STDERR,
> too?

The programmer is smart enough not to try to use any functions that read
from stdin, however, he might import a module that tries to write to
stdout or stderr which would cause the program to crash.  This allows
you to ignore any output with impunity.

Coy