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FREEBSD-UPDATE(8) |
FreeBSD System Manager's Manual |
FREEBSD-UPDATE(8) |
freebsd-update —
fetch and install binary updates to FreeBSD
freebsd-update |
[-b basedir]
[-d workdir]
[-f conffile]
[-F ] [-j
jail] [-k
KEY] [-r
newrelease] [-s
server] [-t
address]
[--not-running-from-cron ] command
... |
The freebsd-update 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 FreeBSD Security Team only builds
updates for releases shipped in binary form by the
FreeBSD Release Engineering Team, e.g.,
FreeBSD 11.2-RELEASE and
FreeBSD 12.0-RELEASE, but not
FreeBSD 11.2-STABLE or FreeBSD
13.0-CURRENT.
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)
-F
- Force
freebsd-update fetch
to proceed in the case of an unfinished upgrade.
-j
jail
- Operate on the given jail specified by jid or
name. (The version of the installed userland is
detected and the
--currently-running option is no
more required.)
-k
KEY
- Trust an RSA key with SHA256 of KEY. (default: read
value from configuration file.)
-r
newrelease
- Specify the new release (e.g., 11.2-RELEASE) to which
freebsd-update 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.)
--not-running-from-cron
- Force
freebsd-update fetch
to proceed when there is no controlling tty. This is for use by automated
scripts and orchestration tools. Please do not run
freebsd-update fetch from
crontab or similar using this flag, see:
freebsd-update cron
--currently-running
release
- Do not detect the currently-running release; instead, assume that the
system is running the specified release. This is
most likely to be useful when upgrading jails.
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.
Note that this command may require up to 500 MB of space in
workdir depending on which components of the
FreeBSD base system are installed.
updatesready
- Check if there are fetched updates ready to install. Returns exit code 2
if there are no updates to install.
install
- Install the most recently fetched updates or upgrade. Returns exit code 2
if there are no updates to install and the
fetch
command wasn't passed as an earlier argument in the same invocation.
rollback
- Uninstall the most recently installed updates.
IDS
- Compare the system against a "known good" index of the installed
release.
showconfig
- Show configuration options after parsing conffile and command line
options.
- 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,
freebsd-update IDS should
not be relied upon as an "Intrusion Detection System", since 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).
- The pager program used to present various reports during the execution.
(Default: “/usr/bin/less”.)
PAGER can be set to
“cat” when a non-interactive pager is desired.
- /etc/freebsd-update.conf
- Default location of the
freebsd-update
configuration file.
- /var/db/freebsd-update/
- Default location where
freebsd-update stores
temporary files and downloaded updates.
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