ssh Post: 55036

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LEARN ABOUT OPENDARWIN

chroot

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