1. Useful for someone who can invest a lot of time, starting from the basics, to reach the level of Debian Guru... 2. A bit too much focus on Midnight Commande

1. Useful for someone who can invest a lot of time, starting from the basics, to reach the level of Debian Guru... 2. A bit too much focus on Midnight Commander if you ask me. I also find it excessive to review flex and yacc - when the reader is not even told in what case they would need this information. This isn't a compilers course, don't bother with these two. 3. If this was completed in 2021, what's new in the 2023 version?