How to execute "gksudo umount VirtualDVD"

[Wildman]

On Fri, 28 Oct 2016 11:05:17 +0300, Demosthenes Koptsis wrote:

> Yes it was pasted wrong...
> 
>      def umount(self):
>          '''unmounts VirtualDVD'''
>          cmd = 'gksudo umount VirtualDVD'
>          proc = subprocess.Popen(str(cmd), shell=True, 
> stdout=subprocess.PIPE).stdout.read()
>          print proc
> 
> it fails silently.... the gksudo runs correctly. I can input the password.
> 
> But the umount does nothing. I keep have mounted the VirtualDVD folder.
> 
> 
> On 10/28/2016 12:54 AM, Ian Kelly wrote:
>> On Thu, Oct 27, 2016 at 3:30 PM, Demosthenes Koptsis
>> <demosthenesk at gmail.com> wrote:
>>> I want to execute the command "gksudo umount VirtualDVD"
>>>
>>> My code is this but it fails:
>>>
>>> def umount(self):
>>>      '''unmounts VirtualDVD''' cmd ='gksudo umount VirtualDVD' proc =
>>> subprocess.Popen(str(cmd),shell=True,stdout=subprocess.PIPE).stdout.read()
>>>      print proc
>> It looks like your code pasted incorrectly.
>>
>>> It pops up the gksudo dialog, and then fails. But i don't get any stdout or
>>> stderror.
>> Fails how? Is there an error? Does it hang? Does nothing happen at all?
>>
>> My initial thought is that you might want to try using
>> Popen.communicate instead of stdout.read in case you're getting
>> deadlocked. See the big red warning below
>> https://docs.python.org/3/library/subprocess.html#subprocess.Popen.stdout

Try this:

    def umount(self):
        '''unmounts VirtualDVD'''
        cmd = ["gksudo", "umount", VirtualDVD
        p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE)
        proc = p.communicate()
        print proc

-- 
<Wildman> GNU/Linux user #557453
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