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| 1 | .TH SU 1
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| 2 | .SH NAME
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| 3 | su \- temporary become superuser or another user
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| 4 | .SH SYNOPSIS
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| 5 | .B su
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| 6 | .RB [ \- [ e ]]
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| 7 | .RI [ user
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| 8 | .RI [ shell-arguments " ...]]"
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| 9 | .SH DESCRIPTION
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| 10 | .de SP
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| 11 | .if t .sp 0.4
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| 12 | .if n .sp
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| 13 | ..
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| 14 | .B Su
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| 15 | can be used to temporarily run a shell under the identity of the superuser
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| 16 | or another user. Unless the caller is a member of the operator group, one
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| 17 | is prompted for the password of the user-to-be. Calls that need a password
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| 18 | are logged, whether they succeed or not. The default user is
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| 19 | .BR root .
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| 20 | Further arguments are handed to the shell. By default the shell started is
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| 21 | the shell of the invoker, and the environment is passed on as is.
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| 22 | .PP
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| 23 | The activities of
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| 24 | .B su
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| 25 | are logged through
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| 26 | .BR syslog (3)
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| 27 | under Minix-vmd.
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| 28 | .SH OPTIONS
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| 29 | .TP
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| 30 | .B \-
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| 31 | Constructs a new environment consisting of the
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| 32 | .BR PATH ,
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| 33 | .BR USER ,
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| 34 | .BR LOGNAME ,
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| 35 | .BR HOME ,
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| 36 | .BR SHELL ,
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| 37 | .BR TERM ,
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| 38 | .BR TERMCAP ,
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| 39 | and
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| 40 | .BR TZ
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| 41 | variables. The environment is the same as on a normal login, except that
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| 42 | .BR TERM ,
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| 43 | .B TERMCAP
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| 44 | and
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| 45 | .B TZ
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| 46 | are copied from the current environment if set. The current working
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| 47 | directory is changed to the user home directory, the shell of the user-to-be
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| 48 | is run, and it is started as a login shell, with the first character a minus
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| 49 | sign.
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| 50 | .TP
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| 51 | .B \-e
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| 52 | Like above, but the shell is started normally, not as a login shell.
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| 53 | .SH "SEE ALSO"
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| 54 | .BR sh (1),
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| 55 | .BR login (1),
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| 56 | .BR syslog (3).
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| 57 | .SH AUTHOR
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| 58 | Kees J. Bot <kjb@cs.vu.nl>
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