Time for Safety

Safety is important, wherever we are. For example, in a construction site as in a newly built operating system, safety is a key factor to have things done the right way. Our shell is nothing different when it comes to safety: we spend most of our time inside our environment, trying to have things done, tasks running, and keep everything in order. This last chapter will give us some quick solutions and hints on how to strengthen it and preserve it from the most common issues using the shell. We will not use more advanced tools such as security or other kernel-level enhancement: such tools would require an entire book on their own, and they come after we clean up our shell. We will perform housekeeping, nothing really invasive, just a finishing touch, trying to find a balance between security, safety, and usability; and this is actually a hard goal: strengthen too...