chrootuid(1) [debian man page]
CHROOTUID(1) General Commands Manual CHROOTUID(1) NAME
chrootuid - run command in restricted environment SYNOPSIS
chrootuid [-i] newroot newuser command... DESCRIPTION
The chrootuid command sets up a restricted environment for executing command. Access to the file system is restricted to the newroot sub- tree; privileges are restricted to those of the newuser account (which must be a known account in the unrestricted environment). The ini- tial working directory is changed to newroot. chrootuid combines chroot(8) and su(1) into one program, so that there is no need to have commands such as /usr/bin/su in the restricted environment. Only the superuser can use the chrootuid command. OPTIONS
There is only one option for chrootuid: -i. That option makes it run in interactive mode. Errors will be printed on stderr instead of through syslog and the exit status will be 1 if there are any errors. RETURN CODES
The exit status of chrootuid when running on daemon mode (default) is always 0. If it is running on interactive mode, it will exit with an exit status of 1 if there is any error in its invocation, otherwise the exit status is the exit status of command. DIAGNOSTICS
Problems are reported to the syslog daemon if running on daemon mode. If running on interactive mode, errors are reported on stderr. SEE ALSO
chroot(8), su(1) AUTHOR(S) Wietse Venema Eindhoven University of Technology Department of Mathematics and Computer Science Den Dolech 2, P.O. Box 513, 5600 MB Eindhoven, The Netherlands IBM T.J. Watson Research P.O. Box 704 Yorktown Heights, NY 10598, USA CREATION DATE
Tue Oct 13 11:37:29 MET 1992 LAST MODIFICATION
Mon May 20 22:49:02 CEST 2007 VERSION
/RELEASE 1.3 CHROOTUID(1)
Check Out this Related Man Page
chroot(1M) System Administration Commands chroot(1M) NAME
chroot - change root directory for a command SYNOPSIS
/usr/sbin/chroot newroot command DESCRIPTION
The chroot utility causes command to be executed relative to newroot. The meaning of any initial slashes (/) in the path names is changed to newroot for command and any of its child processes. Upon execution, the initial working directory is newroot. Notice that redirecting the output of command to a file, chroot newroot command >x will create the file x relative to the original root of command, not the new one. The new root path name is always relative to the current root. Even if a chroot is currently in effect, the newroot argument is relative to the current root of the running process. This command can be run only by the super-user. RETURN VALUES
The exit status of chroot is the return value of command. EXAMPLES
Example 1 Using the chroot Utility The chroot utility provides an easy way to extract tar files (see tar(1)) written with absolute filenames to a different location. It is necessary to copy the shared libraries used by tar (see ldd(1)) to the newroot filesystem. example# mkdir /tmp/lib; cd /lib example# cp ld.so.1 libc.so.1 libcmd.so.1 libdl.so.1 libsec.so.1 /tmp/lib example# cp /usr/bin/tar /tmp example# dd if=/dev/rmt/0 | chroot /tmp tar xvf - ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
cd(1), tar(1), chroot(2), ttyname(3C), attributes(5) NOTES
Exercise extreme caution when referencing device files in the new root file system. References by routines such as ttyname(3C) to stdin, stdout, and stderr will find that the device associated with the file descriptor is unknown after chroot is run. SunOS 5.11 15 Dec 2003 chroot(1M)