The Linux Upskill Challenge
You can achieve much more learning in 20 days.<p>Important fundamentals are omitted but some oddly specific subjects are cherry-picked and given an unusual amount of attention like running nmap. Running nmap (a portscanner) can get you fired from your job and there's precedent of this.<p>The text formatting is inconsistent. Reader mode makes it better, but a simple markdown file would have clearer.<p>Explaining what a service is before explaining what a task is, is weird.<p>APT is mentioned, but APT is specific to Debian-based distros. Debian is not mentioned a single time in the article. Other distros use other package management systems.<p>You should use nftables instead of iptables. iptables is deprecated.<p>This article just reinforces that "learning Linux" is simply learning some few random commands.