Bazaar (bzr) is a distributed version control system (VCS) sponsored by Canonical and thus bzr is widely used by the Ubuntu community.
Like any vcs, bzr will let you track the different version of your code locally and let you push the changes to a remote server.
One cool feature of bzr is that you can maintain a remote copy of your code history without having a bzr server running, nor having a copy of bzr on the remote server running and simply by using ssh to transport the data.
This tutorial will not explain how bzr works, but will show the couple few step to create your local repository, add a few files, commit the changes, push them to a remote server and copy the branch newly created to another machine.
Linux services can be started, stopped and reloaded with the use of scripts stocked in /etc/init.d/.
However, during start up or when changing runlevel, those scripts are searched in /etc/rcX.d/ where X is the runlevel number.
This tutorial will explain how one can activate, deactivate or modify a service start up.
nload is a ncurse based network traffic analyser. Being a ncurse based tools, you do not need to start X in order to use that software which is necessary when administering machines remotely ... and even locally actually.