Проект OpenNet: MAN freebsd-update (8) Команды системного администрирования (FreeBSD и Linux)

Интерактивная система просмотра системных руководств (man-ов)

freebsd-update (8)

>> freebsd-update (8) ( FreeBSD man: Команды системного администрирования )

BSD mandoc
FreeBSD

NAME

freebsd-update

 - fetch and install binary updates to FreeBSD

SYNOPSIS

[-b basedir ] [-d workdir ] [-f conffile ] [-k KEY ] [-r newrelease ] [-s server ] [-t address ] command ...

DESCRIPTION

The tool is used to fetch, install, and rollback binary updates to the FreeBSD base system. Note that updates are only available if they are being built for the FreeBSD release and architecture being used; in particular, the Fx Security Team only builds updates for releases shipped in binary form by the Fx Release Engineering Team, e.g., Fx 6.1-RELEASE and Fx 6.2-RC1, but not Fx 6.2-STABLE or Fx 7.0-CURRENT.

OPTIONS

The following options are supported

-b basedir: Operate on a system mounted at basedir (default: / or as given in the configuration file.)
-d workdir: Store working files in workdir (default: /var/db/freebsd-update/ or as given in the configuration file.)
-f conffile: Read configuration options from conffile (default: /etc/freebsd-update.conf
-k KEY: Trust an RSA key with SHA256 of KEY (default: read value from configuration file.)
-r newrelease: Specify the new release to which should upgrade (upgrade command only).
-s server: Fetch files from the specified server or server pool. (default: read value from configuration file.)
-t address: Mail output of cron command, if any, to address (default: root, or as given in the configuration file.)

COMMANDS

The command can be any one of the following:

fetch: Based on the currently installed world and the configuration options set, fetch all available binary updates.
cron: Sleep a random amount of time between 1 and 3600 seconds, then download updates as if the fetch command was used. If updates are downloaded, an email will be sent (to root or a different address if specified via the -t option or in the configuration file). As the name suggests, this command is designed for running from cron(8); the random delay serves to minimize the probability that a large number of machines will simultaneously attempt to fetch updates.
upgrade: Fetch files necessary for upgrading to a new release. Before using this command, make sure that you read the announcement and release notes for the new release in case there are any special steps needed for upgrading.
install: Install the most recently fetched updates or upgrade.
rollback: Uninstall the most recently installed updates.
IDS: Compare the system against a "known good" index of the installed release.

TIPS

If your clock is set to local time, adding the line

0 3 * * * root /usr/sbin/freebsd-update cron

to /etc/crontab will check for updates every night. If your clock is set to UTC, please pick a random time other than 3AM, to avoid overly imposing an uneven load on the server(s) hosting the updates.
In spite of its name, IDS should not be relied upon as an "Intrusion Detection System", since it if the system has been tampered with it cannot be trusted to operate correctly. If you intend to use this command for intrusion-detection purposes, make sure you boot from a secure disk (e.g., a CD).

FILES

/etc/freebsd-update.conf: Default location of the configuration file.
/var/db/freebsd-update/: Default location where stores temporary files and downloaded updates.