su – run a shell with substitute user and group IDs
su [OPTION]… [-] [USER [ARG]…]
Change the effective user id and group id to that of USER.
-, -l, –login
make the shell a login shell
pass a single COMMAND to the shell with -c
pass -f to the shell (for csh or tcsh)
do not reset environment variables
-p same as -m
run SHELL if /etc/shells allows it
–help display this help and exit
output version information and exit
A mere – implies -l. If USER not given, assume root.
Written by David MacKenzie.
Report bugs to <email@example.com>.
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.