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.