Provided by:
coreutils_7.4-2ubuntu2_i386 
NAME
chroot - run command or interactive shell with special root directory
SYNOPSIS
chroot NEWROOT [COMMAND [ARG]...]
chroot OPTION
DESCRIPTION
Run COMMAND with root directory set to NEWROOT.
--help display this help and exit
--version
output version information and exit
If no command is given, run ‘‘${SHELL} -i’’ (default: /bin/sh).
AUTHOR
Written by Roland McGrath.
REPORTING BUGS
Report chroot 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/>
COPYRIGHT
Copyright © 2009 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
chroot(2)
The full documentation for chroot is maintained as a Texinfo manual.
If the info and chroot programs are properly installed at your site,
the command
info coreutils 'chroot invocation'
should give you access to the complete manual.