- https://www.reddit.com/r/learnprogramming/comments/4cvbb3/list_of_mostly_free_learning_resources_for_linux/
- https://www.reddit.com/r/learnprogramming/comments/6wjirl/14_exercises_to_test_your_basic_to_intermediate/
- https://www.reddit.com/r/commandline/comments/63enly/100_examples_based_tutorial_for_gnu_grep/
- https://news.ycombinator.com/item?id=15549318 - made it to front page on HN and top trending on github
- https://www.reddit.com/r/perl/comments/7l0sxe/hundreds_of_perl_5_oneliners_feedback_please/
- https://www.reddit.com/r/linux/comments/7qzme7/learnbyexample_hundreds_of_examples_based/
- grep
- sed
- awk
- https://www.reddit.com/r/programming/duplicates/78o4xg/learn_to_use_gnu_awk_with_hundreds_of_examples/
- https://twitter.com/binitamshah/status/923391237192794112
- https://twitter.com/TrendingGithub/status/923209396930441216
- https://twitter.com/avdi/status/925011427512942597
- https://lobste.rs/s/xpgpdi/giant_list_gnu_awk_examples
- https://pinboard.in/url:e95753a8dab4a3da6b34fc182eb95fb2d116bdc7
- http://irreal.org/blog/?p=6701
- https://ss64.com/bash/awk.html
- perl
- ruby
- repo as a whole