<oerjan> le/rn tmp//tmp/ is a directory for files that are not worth saving in HackEgo history, but which should still survive a single command. Note that it interacts funnily with HackEgo\'s lock and re-run commit check: files can disappear if you don\'t know what you\'re doing. Basically, don\'t modify files inside and outside tmp/ in the same HackEgo command.

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