chroot


chroot

(operating system)The UNIX command to make the root directory (/) become something other than its default for thelifetime of the current process. It can only be run byprivileged users and is used to give a process (commonly anetwork server such as FTP or HTTP) access to a restrictedportion of the file system.

The new root contains copies of all the essential files anddirectories, e.g. /lib, /dev/tty, /tmp.