chroot.8

<B>Digital的Unix操作系统VAX 4.2源码</B>

.TH chroot 8
.SH Name
chroot \- change root directory for a command
.SH Syntax
.B /usr/bin/chroot
.I "newroot command"
.SH Description
.NXr "root directory change"
.NXM "root directory" "chroot command"
The 
.PN chroot
program is executed
relative to the 
.IR "new root" .
The meaning of any initial slashes
.RB ( / )
in path names is changed for a command and any of its children to
.IR newroot .
Furthermore, the initial working directory is
.IR newroot .
.PP
The new root path name is always relative to the current root: even if a
.PN chroot
is currently in effect, the
.I newroot
argument is relative to the current root of the
running process.
.SH Restrictions
This program is restricted to processes with appropriate privileges.
.PP
Use extreme caution when referencing special files
in the new root file system.
.SH Examples
The following example will create the file
.B x
relative to the original root, not the new one.
.sp
.RS
%
\fBchroot \|\fInewroot \|command\fP \|>x\fR
.RE
.SH See Also
chdir(2), chroot(2)