chroot --version (return code: 0)
chroot (GNU coreutils) 8.25
Copyright (C) 2016 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.
Written by Roland McGrath.
chroot --help (return code: 0)
Usage: chroot [OPTION] NEWROOT [COMMAND [ARG]...]
or: chroot OPTION
Run COMMAND with root directory set to NEWROOT.
--groups=G_LIST specify supplementary groups as g1,g2,..,gN
--userspec=USER:GROUP specify user and group (ID or name) to use
--skip-chdir do not change working directory to '/'
--help display this help and exit
--version output version information and exit
If no command is given, run '${SHELL} -i' (default: '/bin/sh -i').
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Full documentation at: <http://www.gnu.org/software/coreutils/chroot>
or available locally via: info '(coreutils) chroot invocation'