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[mininet-discuss] How to redirect the ouput of a process to mininet cli.

Shiyao Ma i at introo.me
Mon Apr 21 10:35:55 PDT 2014


Thanks.
 I was at first stuck with the `Node.sendCmd ` and I later discovered that
this is not a public api (which secretly set self.waiting = True). So I
should avoid Node.sendCMD.
I then found Mininet use bash's job control. So, a Node.cmd("foobar &")
will just make it. (As documented on the web).



2014-04-21 20:56 GMT+08:00 Philip Wette <wette at mail.upb.de>:

> You can redirect stdout and stderr to a file exactly in the way you would
> do that in bash, too.
>
> Just add  "> /tmp/output 2>&1" to your function call.
>
> Von meinem iPhone gesendet
>
> Am 21.04.2014 um 14:49 schrieb Shiyao Ma <i at introo.me>:
>
> Hi.
> Mininet can start a process and not wait it by Node.sendCmd. But this
> loses all the stdout of that process and more importantly the stderr, which
> quite critic when writing a python script.
>
> I wonder is there any sendCmd like thing but also outputs the stderr and
> stdout of the launched process to CLI(Mininet) or a certain file.
>
>
> Thanks.
>
> --
>
> 吾輩は猫である。ホームーページはhttp://introo.me。
>
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>
>


-- 

吾輩は猫である。ホームーページはhttp://introo.me。
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