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researchv10 Dan Cross

.TH SU 8
.CT 1 sa_nonmortals secur
.SH NAME
su, setlog \- substitute userid temporarily, become super-user
.SH SYNOPSIS
.B /etc/su
[
.I user
]
.PP
.B /etc/setlog
.I logname
.I command ...
.SH DESCRIPTION
.I Su
changes the userid to that of
.I user
(root by default)
with groupid and login shell determined from 
the password file.
If the current userid is not the super-user,
the password for the new user is demanded.
The userid stays in force until the new shell exits.
.PP
The current directory and environment
are unchanged unless the new userid is super-user,
in which case the environment variables 
.B PS1
and
.BR PATH ,
if present, are set to standard values
(white space and 
.BR /bin:/usr/bin:/etc ).
.PP
.I Setlog
executes the specified
.I command
with login name
.IR logname .
The environment is otherwise unchanged;
in particular,
the userid is not set.
Only the super-user may use this command.
.SH "SEE ALSO"
.IR sh (1),
.IR getuid (2),
.IR passwd (5)

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