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 bug-coreutils@gnu.org
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.