<oerjan> le/rn rules of wisdom//Unless essential for the entry\'s humor, all wisdom entries should: be understandable without the separate key, be single spaced, and use proper capitalization and punctuation.

if [ -z $(tr [A-Z] [a-z] <<< "$1") ]; then echo "Hello, world!"; else if [ -f hw/$(tr [A-Z] [a-z] <<< "$1") ]; then cat hw/$(tr [A-Z] [a-z] <<< "$1"); else echo "Your language does not exist"; fi; fi