An anonymous reader writes: Author of Learn Python Te Hard Way and other works, Zed Shaw, has released a free interactive beta of Learn Linux The Hard Way; a web-based virtual Linux environment which introduces the command line and other essential Linux concepts in 30 exercises. Of course, my first entry was rm -rf
/* which only produced a stream of errors. Missing vim, nano, etc., I amused myself by entering other commands and creating a few files — appending to them with "echo "*" > text.txt, etc. I wish I had discovered something like a long time ago.