runuser(1) -- Linux man page



runuser - run a shell with substitute user and group IDs, similar to su, but will not prompt for password.  


runuser [OPTION]... [-] [USER [ARG]...]  


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
same as -m
-s, --shell=SHELL
run SHELL if /etc/shells allows it
display this help and exit
output version information and exit

A mere - implies -l. If USER not given, assume root.  


Written by David MacKenzie, Dan Walsh.  


Report bugs to <>.  


Copyright © 2004 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.  


Since this command is trimmed down version of su use you can use the su manual. 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

should give you access to the complete manual.