As I always have a tendency to forget the special variables used in shell scripts, I am going to document down the variables here.
How often have you wanted to take a quick glance of the calendar in your desktop? You may need to click a couple of dozen of times on your desktop if the period your are interested in is more than a decade back.
Many coders do not think that creating temporary files in a secure way is important, especially in shell scripts. It’s just a temporary file, they might say. But a simple symbolic link exploit could make the whole system unusable.