For those making the same change on multiple servers at the same time, this could be the tool for you. Many Linux system administrators work on a bank of machines, a farm of web servers, which they have to maintain. You might be used to logging into each one with SSH and doing it serially. But a handy tool called ClusterSSH is something you may want to tap into for help to streamline your job.
ClusterSSH is a Tk/Perl wrapper around standard Linux tools just like XTerma and SSH so it will perform on most any POSIX-compliant operating system where libraries are available. Instructions on how to install and configure it can be found here.
ClusterSSH may not be considered a complete replacement for having a configuration management system when you’re responsible for maintaining a lot of machines. But when speed is of the essence, or if you are performing prototypes, it sounds like it