runuser --version (return code: 0)
runuser from util-linux 2.27.1
runuser --help (return code: 0)
Usage:
runuser [options] -u <user> <command>
runuser [options] [-] [<user> [<argument>...]]
Run <command> with the effective user ID and group ID of <user>. If -u is
not given, fall back to su(1)-compatible semantics and execute standard shell.
The options -c, -f, -l, and -s are mutually exclusive with -u.
Options:
-u, --user <user> username
-m, -p, --preserve-environment do not reset environment variables
-g, --group <group> specify the primary group
-G, --supp-group <group> specify a supplemental group
-, -l, --login make the shell a login shell
-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)
-s, --shell <shell> run <shell> if /etc/shells allows it
-h, --help display this help and exit
-V, --version output version information and exit
For more details see runuser(1).