Day 26 of the #100DaysOfLinux challenge focuses on essential Linux CLI tools like grep, find, head, tail, and wc.
Challenges include tasks like finding specific patterns, locating files, displaying the beginning and end of files, and counting lines/words/bytes.
Participants are encouraged to create a sample file, use grep to search for patterns, find files in directories, display the head and tail of files, and count occurrences.
Bonus challenge involves comparing two config files to find unmatched lines, and participants are urged to choose and complete 3 challenges.