su
SU(1)                                 FSF                                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, --commmand=COMMAND
              pass a single COMMAND to the shell with -c
       -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 (C) 2002 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is
       NO warranty; not even for MERCHANTABILITY or FITNESS FOR  A  PARTICULAR
       PURPOSE.
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  com-
       mand
              info su
       should give you access to the complete manual.
su (coreutils) 4.5.3             October 2003                            SU(1)