sh — Apollo

;
SHELL -- Invokes a Shell or a particular Shell command.  If you issue SHELL
         without an argument, the Shell prompt will appear in your DEBUG pane,
         and you can issue Shell commands. To end the Shell session and return
         to DEBUG, type an End-of-File character (which is usually CTRL-Z). If
         you issue the SHELL command with an argument, the argument must be a
         Shell command.  Control returns to DEBUG after the Shell command is
         executed.  SH is the legal abbreviation for SHELL.

  > SHELL                            (In DEBUG, Request a Shell.)
  $ date                             (In Shell, type a Shell command.)
  Monday, June 16, 1986   5:47:39 pm (EDT)
  $ *** EOF ***                      (Request a return to DEBUG.)
  > SHELL date                       (Back in DEBUG, request a Shell command.)
  Monday, June 16, 1986   5:48:26 pm (EDT)
  >
Museum
