chroot man page on OpenDarwin

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

NAME
     chroot — change root directory

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

DESCRIPTION
     The chroot utility changes its current and root directories to the sup‐
     plied directory newroot and then exec's command, if supplied, or an
     interactive copy of the user's login 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.

ENVIRONMENT
     The following environment variable is referenced by :

     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.

SEE ALSO
     chdir(2), chroot(2), environ(7), jail(8)

HISTORY
     The chroot utility first appeared in 4.4BSD.

SECURITY CONSIDERATIONS
     chroot should never be installed setuid root, as it would then be possi‐
     ble to exploit the program to gain root privileges.

BSD			       January 24, 2002				   BSD
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