Op 09-08-13 06:11, Adam Mercer schreef: > Hi > > I'm trying to write a script that writes some content to a file root > through sudo, but it's not working at all. I am using: > > channel = 'stable' > config_file = '/opt/ldg/etc/channel.conf' > command = ['echo', '-n', channel, '|', 'sudo', 'tee', config_file] > p = subprocess.Popen(command, stdout=subprocess.PIPE, > stderr=subprocess.PIPE) > out, _ = p.communicate() > > But it seems as if this isn't doing anything. > > I just want to write the contents of the variable channel to the file > /opt/ldg/etc/channel.conf. But whatever I try just doesn't work. Can > anyone offer any pointers? > > Cheers > > Adam
subprocess.Popen by default doesn't use a shell. That could mean that the equivallent shell command you are trying to execute is: echo -n stable '|' sudo tee /opt/ldg/etc/channel.conf instead of echo -n stable | sudo tee /opt/ldg/etc/channel.conf which you probably want. You should also take care with the echo command. Echo is usually a shell builtin that can behave differently than the echo command. You should make sure you are using the one you actually want to use. -- Antoon Pardon -- http://mail.python.org/mailman/listinfo/python-list
