In z/OS® UNIX, users of the z/OS UNIX shells can issue TSO/E commands. The user simply enters the shell command tso, followed by a TSO command string. The user can specify whether the TSO command is to be run through the shell (in which case the output will be displayed on the screen) or through a TSO environment (in which case the command output will be written to the defined standard output). For more information about running the command through the shell or through a TSO environment, see z/OS UNIX System Services Command Reference.