Linux: chroot – change root directory.
chroot
Run a command with a different root directory.
‘chroot’ runs a command with a specified root directory. On many systems, only the super-user can do this.
SYNTAX
chroot NEWROOT [COMMAND [ARGS]...]
chroot OPTION
Ordinarily, filenames are looked up starting at the root of the directory structure, i.e. ‘/’
‘chroot’ changes the root to the directory NEWROOT (which must exist) and then runs COMMAND with optional ARGS.
If COMMAND is not specified, the default is the value of the `SHELL’ environment variable or `/bin/sh’ if not set, invoked with the `-i’ option.
The only options are `–help’ and `–version’
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