projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 7d4168b6 KM |
1 | .\" Copyright (c) 1980 Regents of the University of California. |
| 2 | .\" All rights reserved. The Berkeley software License Agreement | |
| 3 | .\" specifies the terms and conditions for redistribution. | |
| 4 | .\" | |
| c2d8aed9 | 5 | .\" @(#)su.1 6.2 (Berkeley) %G% |
| 7d4168b6 | 6 | .\" |
| d9fd65e7 | 7 | .TH SU 1 "" |
| 7d4168b6 KM |
8 | .UC |
| 9 | .SH NAME | |
| 10 | su \- substitute user id temporarily | |
| 11 | .SH SYNOPSIS | |
| 12 | .B su | |
| d9fd65e7 | 13 | [ \-f ] [ \- ] [ userid ] |
| 7d4168b6 KM |
14 | .SH DESCRIPTION |
| 15 | .I Su | |
| 16 | demands the password of the specified | |
| 17 | .I userid, | |
| 18 | and if it is given, | |
| 19 | changes to that | |
| 20 | .I userid | |
| 21 | and invokes the Shell | |
| 22 | .IR sh (1) | |
| d9fd65e7 KM |
23 | or |
| 24 | .IR csh (1) | |
| 7d4168b6 KM |
25 | without changing the current directory. |
| 26 | The user environment | |
| 27 | is unchanged except for HOME and SHELL, | |
| 28 | which are taken from the password file | |
| 29 | for the user being substituted | |
| 30 | (see | |
| f0fa4329 | 31 | .IR environ (7)). |
| 7d4168b6 KM |
32 | The new user ID stays in force until the Shell exits. |
| 33 | .PP | |
| 34 | If no | |
| 35 | .I userid | |
| c2d8aed9 KM |
36 | is specified, ``root'' is assumed. |
| 37 | Only users in the ``wheel'' group (group 0) can | |
| 38 | .I su | |
| 39 | to ``root'', even with the root password. | |
| 7d4168b6 KM |
40 | To remind the super-user of his responsibilities, |
| 41 | the Shell substitutes `#' for its usual prompt. | |
| d9fd65e7 KM |
42 | .PP |
| 43 | The | |
| 44 | .B \-f | |
| 45 | option prevents | |
| 46 | .IR csh (1) | |
| 47 | from executing the .cshrc file; thus making | |
| 48 | .I su | |
| 49 | start up faster. | |
| 50 | .PP | |
| 51 | The | |
| 52 | .B \- | |
| 53 | option simulates a full login. | |
| 7d4168b6 | 54 | .SH "SEE ALSO" |
| d9fd65e7 | 55 | sh(1), csh(1) |