updatejail(8) is a script for rebuilding a chrooted environment made with jailer


updatejail <config.file> <jail identifier>


updatejail is a script which wipes out a chroot environment and rebuilds it. By default it leaves the /dev/log device in the chroot, so you do not need to restart system logger after updating a jail.


Do not configure your daemon inside your jail, because updatejail script will wipe out all the data inside the jail. If you would like to change any setting inside the jail, make the changes in the original location and then run updatejail . This makes it possible to place a jail even to a ramdisk.


The configuration file which contains the settings of the new chrooted environment. For further information see man 8 jailer.conf

<jail identifier>
The identifier which specifies which jail will be used. Identifiers need to be defined at jailer.conf . This identifier has to match the directory name used in the Root location.


updatejail will not parse the configuration file and determine the Root location by itself.

For updatejail to work the Root location for the jail identifier has to end with the name of the identifier itself. For example, if your identifier is apache the Root location in jailer.conf has to be something like /chroots/apache.


This manual page was written by Péter Höltzl <[email protected]>.