About: The stigma surrounding the `goto` instruction in C is strong, but it can be useful nevertheless for cleaner code in for error handling as exceptions are not available.
About: Wget is amazing but how to make it work smoothly on unstable connections? I use a shell alias to make it retry the download infinite times until it's done.
About: Think about an analogical clock and ignore the minute and second hand. Your hour hand is currently pointing to `11` and you want to move it to `3`. Do you turn the hand clockwise or counterclockwise? This is a simple algorithm with C implementation to find the shortest path on a clock-like ring.