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Command:

su

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  (C)  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