popen4

[billie]

Hi all. I'm trying to execute system commands and capture the output by
using popen4:

stdout example:[color=blue][color=green][color=darkred]
>>>exec_cmd = popen2.popen4(" echo hello!")
>>>output = exec_cmd[0].read()[/color][/color][/color]
hello

stderr example:[color=blue][color=green][color=darkred]
>>>exec_cmd = popen2.popen4(" echobv hello!")
>>>output = exec_cmd[0].read()[/color][/color][/color]
Unrecognized command

The problem occurs when I try to execute interactive commands like ftp,
python intepreter etc...
In this case the program crashes without even giving an error.
Suggestions?

Regards

[Piet van Oostrum]

Re: popen4

>>>>> "billie" <mlist@fastwebn et.it> (b) wrote:
[color=blue]
>b> Hi all. I'm trying to execute system commands and capture the output by
>b> using popen4:[/color]
[color=blue]
>b> stdout example:[color=green][color=darkred]
>>>>> exec_cmd = popen2.popen4(" echo hello!")
>>>>> output = exec_cmd[0].read()[/color][/color]
>b> hello[/color]
[color=blue]
>b> stderr example:[color=green][color=darkred]
>>>>> exec_cmd = popen2.popen4(" echobv hello!")
>>>>> output = exec_cmd[0].read()[/color][/color]
>b> Unrecognized command[/color]
[color=blue]
>b> The problem occurs when I try to execute interactive commands like ftp,
>b> python intepreter etc...
>b> In this case the program crashes without even giving an error.[/color]

Crashes?
[color=blue]
>b> Suggestions?[/color]

I think you need something like pyexpect for this.
--
Piet van Oostrum <piet@cs.uu.n l>
URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C 4]
Private email: piet@vanoostrum .org

[billie]

Re: popen4


Piet van Oostrum wrote:[color=blue]
> I think you need something like pyexpect for this.[/color]

PyExpect seems to be no more mantained.

[Ganesan Rajagopal]

Re: popen4

>>>>> "billie" == billie <mlist@fastwebn et.it> writes:
[color=blue]
> Piet van Oostrum wrote:[color=green]
>> I think you need something like pyexpect for this.[/color][/color]
[color=blue]
> PyExpect seems to be no more mantained.[/color]

Try pexpect instead. http://pexpect.sourceforce.net/

Ganesan

--
Ganesan Rajagopal (rganesan at debian.org) | GPG Key: 1024D/5D8C12EA
Web: http://employees.org/~rganesan | http://rganesan.blogspot.com

[Ralf Muschall]

Re: popen4

Ganesan Rajagopal wrote:
[color=blue]
> Try pexpect instead. http://pexpect.sourceforce.net/[/color]
^

That's a content-free ad site. You probably mean sourceforGe.

Ralf