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OpenDarwin 7.2.1 - man page for chroot (opendarwin section 8)

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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 supplied 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 possible to exploit the
     program to gain root privileges.

BSD					 January 24, 2002				      BSD
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