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NetBSD 6.1.5 - man page for chroot (netbsd section 8)

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

NAME
     chroot -- change root directory

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

DESCRIPTION
     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.

ENVIRONMENT
     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.

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

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					 August 13, 2011				      BSD


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