SU
Section: User Commands (1)
Updated: May 5, 1986
Index
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NAME
su - substitute user id temporarily
SYNOPSIS
su
[ -f ] [ - ] [ 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)
or
csh(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(7)).
The new user ID stays in force until the Shell exits.
If no
userid
is specified, ``root'' is assumed.
Only users in the ``wheel'' group (group 0) can
su
to ``root'', even with the root password.
To remind the super-user of his responsibilities,
the Shell substitutes `#' for its usual prompt.
The
-f
option prevents
csh(1)
from executing the .cshrc file; thus making
su
start up faster.
The
-
option simulates a full login.
SEE ALSO
sh(1), csh(1)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
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