If you want to look at version 1.0 of a shell written by a college sophomore in his spare time that went on to become a decent success, see the 1.0 source code

If you want to look at version 1.0 of a shell written by a college sophomore in his spare time that went on to become a decent success, see the 1.0 source code for zsh: https://github.com/llua/zsh-1.0 https://github.com/llua/zsh-1.0 What stands out in reading the 1.0 remarks is that the person writing it clearly cared about shells as an everyday user of them.