.TH SU 1 "16 November 1979"
su \- substitute user id temporarily
demands the password of the specified
without changing the current directory.
is unchanged except for HOME and SHELL,
which are taken from the password file
for the user being substituted
The new user ID stays in force until the Shell exits.
is specified, `root' is assumed.
To remind the super-user of his responsibilities,
the Shell substitutes `#' for its usual prompt.
Local administrative rules cause restrictions to
to `root', even with the root password.
These rules vary from site to site.