Each lab runs a real Linux shell in the browser. Nothing to install, and nothing a student can break.
Get up to speed with the terminal. Start here if you're new to bioinformatics.
echolsheadtailgrepwccatCommand-line exercises from the Carpentries' Unix Shell lesson.
cutsortuniqgrepcutwcvimfindAn empty shell with no lesson attached, for practice and demonstrations.