Manual of the universe command on Dynix 3.2.0

original universe.1 massaged, nroffed and htmlized.

SYNOPSIS
       universe

       att [ command [ arg ... ] ]

       ucb [ command [ arg ... ] ]


DESCRIPTION
       Universe  displays the current universe setting as `att' or `ucb'.  The
       `att' universe selects the functionality of AT&T's UNIX System V Rel  2
       Ver  2,  while  the  `ucb'  universe  selects the functionality of UNIX
       4.2bsd, as distributed by the University of California at Berkeley, and
       enhanced by Sequent.

       Att  or  ucb  run command in the corresponding universe.  If command is
       omitted, a new shell is started in the selected universe and run  as  a
       login shell.

       Before  running  the  shell or command, the att or ucb commands perform
       the following actions: change the universe  to  U_UCB  or  U_ATT,  copy
       ATTPATH  (if  U_ATT)  or  UCBPATH (if U_UCB) to PATH, copy ATTSHELL (if
       U_ATT) or UCBSHELL (if U_UCB) to SHELL, change directory to  $HOME  (if
       command is omitted), and exec the shell ($SHELL) or command.

       Att  or  ucb  will  generate an additional shell if command is omitted.
       When the new shell exits, the previous environment is restored.  If you
       do  not  want  to  return  to the old environment, you can exec the new
       shell by typing `exec att' or `exec ucb'.

       If you move back and forth between universes often, do not place a stty
       command, such as:
            stty 0
       in your .logout file.


SEE ALSO
       environ(7), ln(1), login(1)
       DYNIX System V User's Guide




DYNIX                                                              UNIVERSE(1)