SU


Section: User Commands (1)
Updated: March 2014
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NAME

su – run a shell with substitute user and group IDs
 

SYNOPSIS

su

[OPTION]… [-] [USER [ARG]…]
 

DESCRIPTION

Change the effective user id and group id to that of USER.


-, -l, –login

make the shell a login shell,
clears all envvars except for TERM,
initializes HOME, SHELL, USER, LOGNAME and PATH
-c, –command=COMMAND

pass a single COMMAND to the shell with -c
–session-command=COMMAND

pass a single COMMAND to the shell with -c
and do not create a new session
-f, –fast

pass -f to the shell (for csh or tcsh)
-m, –preserve-environment

do not reset HOME, SHELL, USER, LOGNAME
environment variables
-p

same as -m
-s, –shell=SHELL

run SHELL if /etc/shells allows it
–help

display this help and exit
–version

output version information and exit

A mere – implies -l. If USER not given, assume root.
 

AUTHOR

Written by David MacKenzie.
 

REPORTING BUGS

Report su bugs to [email protected]

GNU coreutils home page: <http://www.gnu.org/software/coreutils/>

General help using GNU software: <http://www.gnu.org/gethelp/>

Report su translation bugs to <http://translationproject.org/team/>
 

COPYRIGHT

Copyright © 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.

This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
 

SEE ALSO

The full documentation for
su

is maintained as a Texinfo manual. If the
info

and
su

programs are properly installed at your site, the command



info coreutils ‘su invocation’


should give you access to the complete manual.



 

Index



NAME

SYNOPSIS

DESCRIPTION

AUTHOR

REPORTING BUGS

COPYRIGHT

SEE ALSO



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