redhat man page for 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 PARTICU-
       LAR 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						   February 2003							     SU(1)