SU(1)                   GENIX Programmer's Manual                   SU(1)



      NAME
           su - substitute user id temporarily

      SYNOPSIS
           su [ userid ]

      DESCRIPTION
           Su demands the password of the specified userid, and if it is given,
           changes  to that userid and invokes the Shell sh(1) without changing
           the current directory.  The user environment is unchanged except for
           HOME  and SHELL, which are taken from the password file for the user
           being substituted (see environ(5)).  The new user ID stays in  force
           until the Shell exits.

           If no userid is specified, `root' is assumed.  To remind the  super-
           user  of  his  responsibilities,  the  Shell substitutes `#' for its
           usual prompt.

      SEE ALSO
           sh(1)

      BUGS
           Local administrative rules cause restrictions to be  placed  on  who
           can  su  to  `root',  even with the root password.  These rules vary
           from site to site.






























      Printed 11/16/83                                                        1