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CHROOT(8)                   System Manager's Manual                  CHROOT(8)

     chroot - change root directory

     chroot [-G group,group,...] [-g group] [-u user] newroot [command]

     The chroot command changes its root directory to the supplied directory
     newroot and exec's command, or, if not supplied, an interactive copy of
     your shell.

     If the -u, -g, or -G options are given, the user, group, and group list
     of the process are set to these values after the chroot has taken place;
     see setgid(2), setgroups(2), setuid(2), getgrnam(3), and getpwnam(3).

     Note: command or the shell are run as your real-user-id.

     The following environment variable is referenced by chroot:

     SHELL  If set, the string specified by SHELL is interpreted as the name
            of the shell to exec.  If the variable SHELL is not set, /bin/sh
            is used.

     ldd(1), chdir(2), chroot(2), environ(7)

     The chroot utility first appeared in 4.4BSD.

     chroot should never be installed setuid root, as it would then be
     possible to exploit the program to gain root privileges.

NetBSD 8.0                      August 13, 2011                     NetBSD 8.0