(This is a toy shell written to explore lowlevel terminal concepts.)

Turtle-shell is a shell designed for interactive use, although it is also a powerful scripting language. Many of the useful features of bash, ksh, and tcsh were incorporated into tsh; many original features were added. The introductory document details some of the unique features of tsh. It assumes basic knowledge of the standard UNIX shells; the intent is to show a reader already familiar with one of the other major shells what makes tsh more useful or more powerful.