add-unix-session-2 - Githubissues

Add the lessons for the unix shell session 2.

[x] introduce standard wildcards, commonly used ones, quick usage examples for file globbing
[x] introduce regex wildcards, quick examples to search files
[x] introduce more commands for pattern matching, filtering, etc. (grep, cut, head, sort)
[x] begin to pipe together commands to manipulate a gtf file
[x] begin processing files with pipes, individually

ndcn / self-guided-learning