Direct login to the z/OS UNIX shell

You can log in directly to the z/OS® UNIX® shell from a system that is connected to z/OS through TCP/IP.

Use one of the following methods:

rlogin: You can rlogin (remote log in) to the shell from a system that has rlogin client support. To log in, use the rlogin command syntax supported at your site.
telnet: You can telnet into the shell. To log in, use the telnet command from your workstation or from another system with telnet client support.

As shown in Figure 1, each of these methods requires the inetd daemon to be set up and active on the z/OS system.

Figure 1. Diagram of a login to the shell from a terminal

There are some differences between the asynchronous terminal support (direct shell login) and the 3270 terminal support (OMVS command):

You cannot switch to TSO/E. However, you can use the TSO SHELL command to run a TSO/E command from your shell session.
You cannot use the ISPF editor (this includes the oedit command, which invokes ISPF edit).
You can use the UNIX vi editor, and other interactive utilities that depend on receiving each keystroke, without hitting the Enter key.
You can use UNIX-style command-line editing.