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# su - Unix, Linux Command

# 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.

Tag | Description
--- | ---
-, -l, --login
| make the shell a login shell
-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 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 bugs to <bug-coreutils@gnu.org>.

# COPYRIGHT

Copyright © 2006 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law.

# SEE ALSO

su is maintained as a Texinfo manual. If the info and su programs are properly installed at your site, the command

Tag | Description
--- | ---
| info su

should give you access to the complete manual.

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