For an application that is not written in python, I need to do some simple yum actions (yum update/yum install/yum list updates) and would like to have a clean indication of whether the yum command succeeded or not. Unfortunately, it seems that, e.g. yum install exits with return code 0 even if something went wrong during the install. What is the recommended way of achieveing this without having to write my own python gluecode ? thanks, David