SU(1)

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

-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 © 2008 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.