Re: system and shell_cmd

[Ben Abbott]

On Dec 6, 2011, at 5:53 PM, Rik wrote:

> 12/6/11
> 
> Can someone with access to Matlab run the following code snippet?
> 
> system ('echo hello')
> 
> I think it will return just the output, but it might return the output and
> the status.
> 
> Also,
> 
> x  = system ('echo hello')
> 
> Is x set to status or the actual output of the command?
> 
> Finally, is there any objection to deprecating shell_cmd which is an alias
> for system?
> 
> Cheers,
> Rik


Rik,

One point, that you may not be aware of, Matlab's system() function behaves 
differently when one and two outputs are present.

status = system ('echo hello')
hello

status =

     0

[status, output] = system ('echo hello')

status =

     0


output =

hello

And second example ...

status = system ('foo')
/bin/bash: foo: command not found

status =

   127

[status, output] = system ('foo')

status =

   127


output =

/bin/bash: foo: command not found


Ben