Main Page | See live article | Alphabetical index

Time share option

Time Share Option (TSO) is an interactive command line interpreter for IBM mainframe operating systems such as MVS/ESA, OS/390 and z/OS. It fills the same purpose as a command shell like Bash on Unix, or cmd on Windows. TSO is normally used by mainframe system administrators and programmers. For more information see the book MVS TSO by Doug Lowe.