If you run a TSO/E command by using the OMVS TSO subcommand or function key or the tso -o command, the TSO/E command runs in your TSO/E address space. The working directory of your TSO/E address space is typically your home directory. Therefore, if you specify a relative path name on a TSO/E command, the system searches for it in your home directory—even if you are working in a different directory.

If you run a TSO/E command by using the tso -t command, it runs in its own process. If you run the command using a relative path name, the system searches for it in your working directory.