z/OS UNIX System Services User's Guide
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The shell session

z/OS UNIX System Services User's Guide

Once your login completes, you see your normal shell prompt (for example, $ or >). This is a UNIX interface, not the 3270-type interface that is displayed by the OMVS command. By default, the terminal interface is in line mode (also known as canonical mode), which means that each time you type a command at the prompt, you need to press Enter to process the command. Some utilities switch the terminal interface to raw mode. When you use a raw mode utility (such as vi or talk), or when command line editing is enabled in the shell, each keystroke is transmitted; you do not need to press <Enter>.

When you are in a shell session, you can:
  • Run all shell commands and utilities.
  • Run any application from the z/OS UNIX file system.
  • Use the vi editor and other full-screen applications such as talk and more.

In the z/OS UNIX environment, the asynchronous terminal interface session has some differences from an OMVS session:

  1. You cannot switch to TSO/E. However, you can use the tso shell command to run a TSO/E command from your session.
  2. You cannot use the ISPF editor. (This includes the oedit and TSO/E OEDIT commands, which invoke ISPF File Edit.)

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