Re: newbie: popen question
thebiggestbangthe...@gmail.com wrote:
> On May 28, 5:31 am, Sebastian Wiesner wrote:
>>
>>
>>> Your best bet is to make sudo not ask for a password. :) If you
>>> don't have the rights, then you can use pexpect to do what you want to
>>> do. http://pexpect.sourceforge.net/pexpect.html
>>> See the second example on that page.
>>> child = pexpect.spawn('scp foo myn...@host.example.com:.')
>>> child.expect ('Password:')
>>> child.sendline (mypassword)
>> The sudo password prompt is very configurable, so changing the configuration
>> to allow execution without password input is really the best option.
>>
>> --
>> Freedom is always the freedom of dissenters.
>> (Rosa Luxemburg)
>
> Thanks guys for helping out! very good answers :-)
>
> Before I saw your answers, I tried the following,
>
> output = subprocess.Popen(["sudo","-b", "code.sh", "arg1"],
> stdout=subprocess.PIPE).communicate()[0]
>
> This seemed to push the shell execution process to the background and
> because my python program was invoked initially with sudo, it seems I
> did not need to enter a passwd again.
>
> Any comments about this..any issues that you see will crop up?
>
> Thanks a ton again.
>
>
>
Is using gksu or kdesu feasible? Or maybe you could run "sudo -v" which
activates sudo then immediately run your "sudo command". This relies on
sudo not configured to not use timestamp though.
--
http://mail.python.org/mailman/listinfo/python-list
Re: newbie: popen question
On May 28, 5:31 am, Sebastian Wiesner wrote:
>
>
> > Your best bet is to make sudo not ask for a password. :) If you
> > don't have the rights, then you can use pexpect to do what you want to
> > do. http://pexpect.sourceforge.net/pexpect.html
>
> > See the second example on that page.
>
> > child = pexpect.spawn('scp foo myn...@host.example.com:.')
> > child.expect ('Password:')
> > child.sendline (mypassword)
>
> The sudo password prompt is very configurable, so changing the configuration
> to allow execution without password input is really the best option.
>
> --
> Freedom is always the freedom of dissenters.
> (Rosa Luxemburg)
Thanks guys for helping out! very good answers :-)
Before I saw your answers, I tried the following,
output = subprocess.Popen(["sudo","-b", "code.sh", "arg1"],
stdout=subprocess.PIPE).communicate()[0]
This seemed to push the shell execution process to the background and
because my python program was invoked initially with sudo, it seems I
did not need to enter a passwd again.
Any comments about this..any issues that you see will crop up?
Thanks a ton again.
--
http://mail.python.org/mailman/listinfo/python-list
Re: newbie: popen question
> Your best bet is to make sudo not ask for a password. :) If you
> don't have the rights, then you can use pexpect to do what you want to
> do. http://pexpect.sourceforge.net/pexpect.html
>
> See the second example on that page.
>
> child = pexpect.spawn('scp foo myn...@host.example.com:.')
> child.expect ('Password:')
> child.sendline (mypassword)
The sudo password prompt is very configurable, so changing the configuration
to allow execution without password input is really the best option.
--
Freedom is always the freedom of dissenters.
(Rosa Luxemburg)
--
http://mail.python.org/mailman/listinfo/python-list
Re: newbie: popen question
On Thu, May 28, 2009 at 9:11 AM, Sean DiZazzo wrote: > On May 27, 6:10 pm, thebiggestbangthe...@gmail.com wrote: > > hello everyone :-), > > I am a newbie to python. I am trying to run a > > bash script from within a python program. I would greatly appreciate > > any pointers/comments about how to get around the problem I am facing. > > > > I want to run bash script: code.sh from within a python program. > > code.sh needs to be run like so from the command line > > [code] > > $ sudo code.sh arg1 arg2 > > [/code] > > > > I read up on some documentation but am not very clear about how to use > > popen. I want to relegate the shell to a background process, but it > > needs to accept the sudo passwd too! > > > > I have tried > > [code] > > p = subprocess.Popen(['/bin/bash', 'sudo '+mypath+'code.sh '+arg1+' > > '+arg2], > > stdout=subprocess.PIPE, > > stderr=subprocess.STDOUT) > > [/code] > > I tried some code from stackoverflow.com/questions/694000/why-doesnt- > > subprocess-popen-always-return > > > > nothing really happens when this executes, the PIPE option pshes it to > > the background and I can't push in the sudo passwd. Can someone please > > give me an idea of how to go about this. > > > > To recap, I want to run a shell script, which needs to be started with > > sudo, and then push it into the background. > > > > Thanks, > > -A > > Your best bet is to make sudo not ask for a password. :) If you > don't have the rights, then you can use pexpect to do what you want to > do. http://pexpect.sourceforge.net/pexpect.html > Whoah there. Pexpect, yes. Making sudo not ask for a password? Only if you tell sudo to only not ask for a password for _this_ file. Telling sudo to not require a password at all is asking for trouble. Also, modifying sudo to allow this script to run without a password would require that to be done on every machine that the OP wants to run on. OP: use pexpect. -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie: popen question
On May 27, 6:10 pm, thebiggestbangthe...@gmail.com wrote:
> hello everyone :-),
> I am a newbie to python. I am trying to run a
> bash script from within a python program. I would greatly appreciate
> any pointers/comments about how to get around the problem I am facing.
>
> I want to run bash script: code.sh from within a python program.
> code.sh needs to be run like so from the command line
> [code]
> $ sudo code.sh arg1 arg2
> [/code]
>
> I read up on some documentation but am not very clear about how to use
> popen. I want to relegate the shell to a background process, but it
> needs to accept the sudo passwd too!
>
> I have tried
> [code]
> p = subprocess.Popen(['/bin/bash', 'sudo '+mypath+'code.sh '+arg1+'
> '+arg2],
> stdout=subprocess.PIPE,
> stderr=subprocess.STDOUT)
> [/code]
> I tried some code from stackoverflow.com/questions/694000/why-doesnt-
> subprocess-popen-always-return
>
> nothing really happens when this executes, the PIPE option pshes it to
> the background and I can't push in the sudo passwd. Can someone please
> give me an idea of how to go about this.
>
> To recap, I want to run a shell script, which needs to be started with
> sudo, and then push it into the background.
>
> Thanks,
> -A
Your best bet is to make sudo not ask for a password. :) If you
don't have the rights, then you can use pexpect to do what you want to
do. http://pexpect.sourceforge.net/pexpect.html
See the second example on that page.
child = pexpect.spawn('scp foo myn...@host.example.com:.')
child.expect ('Password:')
child.sendline (mypassword)
~Sean
--
http://mail.python.org/mailman/listinfo/python-list
newbie: popen question
hello everyone :-), I am a newbie to python. I am trying to run a bash script from within a python program. I would greatly appreciate any pointers/comments about how to get around the problem I am facing. I want to run bash script: code.sh from within a python program. code.sh needs to be run like so from the command line [code] $ sudo code.sh arg1 arg2 [/code] I read up on some documentation but am not very clear about how to use popen. I want to relegate the shell to a background process, but it needs to accept the sudo passwd too! I have tried [code] p = subprocess.Popen(['/bin/bash', 'sudo '+mypath+'code.sh '+arg1+' '+arg2], stdout=subprocess.PIPE, stderr=subprocess.STDOUT) [/code] I tried some code from stackoverflow.com/questions/694000/why-doesnt- subprocess-popen-always-return nothing really happens when this executes, the PIPE option pshes it to the background and I can't push in the sudo passwd. Can someone please give me an idea of how to go about this. To recap, I want to run a shell script, which needs to be started with sudo, and then push it into the background. Thanks, -A -- http://mail.python.org/mailman/listinfo/python-list
