Yup, just took the online RL class and the average grade for the final exam was 45 out of 100, high score of 76. The format was true/false with a short explanation for your answer. I never thought I'd be proud about getting a 53 on a true/false exam, but it was an extremely challenging and rewarding class.
In DOS you use `dir` to list files in a directory. You can also use `dir` to list files that match a string in a directory. `dir 1.png` would list all PNGs with a "1" in their name. You need a separate command with options and a flag to do that in bash. In DOS, it's less than a dozen characters, and it's far more intuitive than having to use `find`. Sure, `find` and `ls` might be more flexible, but definitely not more intuitive.