AVG 8.5 ANTI-VIRUS - LINUX-FREEBSD REV 85.2 User manual

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
Document revision 85.2 (2.4.2009)
Copyright AVG Technologies CZ, s.r.o. All rights reserved.
All other trademarks are the property of their respective owners.
This product uses RSA Data Security, Inc. MD5 Message-Digest Algorithm, Copyright (C) 1991-2, RSA Data Security,
Inc. Created 1991.
This product uses code from C-SaCzech library, Copyright (c) 1996-2001 Jaromir Dolecek ([email protected]).
This product uses compression library zlib, Copyright (c) 1995-2002 Jean-loup Gailly and Mark Adler.
AVG 8.5 Anti-Virus for Linux/FreeBSD Edition
User Manual

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
Contents
........................................................................................................................ 3
1. Introduction
.......................................................................................................... 3
1.1 Features
.......................................................................................................... 3
1.2 Prerequisities
.......................................................................................................... 4
1.3 Prerequisites for the E-mail Server Edition
.......................................................................................................... 4
1.4 Installation Package
........................................................................................................................ 5
2. Installation and Launch
.......................................................................................................... 5
2.1 Distributions Currently Supported
.......................................................................................................... 5
2.1.1 Using rpm, deb packages
.......................................................................................................... 5
2.1.2 Using sh archive
.......................................................................................................... 5
2.1.3 Using tar.gz archive
.......................................................................................................... 8
2.2 The Installation Process
.......................................................................................................... 8
2.3 Product Registration
.......................................................................................................... 8
2.4 Installed Directory Tree
........................................................................................................................ 11
3. On-access Scanner
.......................................................................................................... 11
3.1 RedirFS Anti-Virus Filter
.......................................................................................................... 11
3.2 Dazuko and DazukoFS Kernel Modules
........................................................................................................................ 12
4. Command Line Tools
.......................................................................................................... 12
4.1 AVGSCAN Command
.......................................................................................................... 13
4.2 AVGUPDATE Command
........................................................................................................................ 15
5. Configuration
.......................................................................................................... 15
5.1 General Configuration
.......................................................................................................... 16
5.2 Logging Configuration
.......................................................................................................... 18
5.3 Scheduler Configuration
.......................................................................................................... 20
5.4 Update Configuration
........................................................................................................................ 22
6. E-mail Scanner
.......................................................................................................... 22
6.1 Features
.......................................................................................................... 22
6.1.1 Open Source E-mail Servers Supported
.......................................................................................................... 22
6.1.2 Other Engines Supported
........................................................................................................................ 23
7. Uninstallation
........................................................................................................................ 24
8. FAQ and Technical Support

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
1. Introduction
This User Manual is the full documentation describing AVG 8.5 Anti-Virus for
Linux/FreeBSD. It covers all Linux/FreeBSD editions of the AVG product.
1.1. Features
Kernel Features
The AVG 8.5 Anti-Virus for Linux/FreeBSD kernel provides comprehensive and
reliable protection against viruses for Linux powered machines. It offers many
features, such as scheduled and on-demand scanning of folders, files, and common
archive types for possible virus infection. You can also perform a scheduled or
on-demand update of your AVG either from the Internet or from local update
sources.
Command Line Modules
Powerful standalone command line modules are included in all editions of AVG 8.5
Anti-Virus for Linux/FreeBSD. You can perform all possible on-demand file system
tests and updates using these modules.
E-mail Scanning Features
The incoming and outgoing e-mail messages processed by the supported mail
transport agents (MTA) are monitored by constantly running the AVG process
(memory resident scanning daemon). This means the e-mail spooling queues are
protected and scanned regularly by AVG 8.5 E-mail Server Edition for
Linux/FreeBSD. The e-mail scanning performance can be easily controlled and
configured using AVG 8.5 Anti-Virus for Linux/FreeBSD daemon signals and
comprehensive configuration file parameters. Spam can be filtered using the
integrated antispam engine. Infected e-mails can be moved into quarantine for
further processing.
1.2. Prerequisities
AVG 8.5 Anti-Virus for Linux/FreeBSD requires library libc.so.6 or newer (both
Linux and FreeBSD platforms).
Newly supported amd64 architecture requires lib32 compatible libraries.

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
1.3. Prerequisites for the E-mail Server Edition
One of the supported open-source (sendmail, qmail, exim, postfix) e-mail servers
must be installed (see chapter Features and Supported Mail Servers for details).
1.4. Installation Package
AVG 8.5 Anti-Virus for Linux/FreeBSD installation packages are available on the
installation CD in the form of rpm, deb, or sh packages for various Linux
distributions, or in the form of a precompiled tar.gz package for Linux and FreeBSD.
You can also download the latest appropriate package version from
http://www.avg.com,Download/Programs section.

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
2. Installation and Launch
AVG 8.5 Anti-Virus for Linux/FreeBSD installation packages are provided as rpm
or deb files, and as tar.gz or sh archives.
Please note that upgrading the old AVG for Linux/FreeBSD version 7 to the new
version 8 is not possible. You will have to uninstall AVG 7 manually (via
/opt/grisoft/avg7/bin/uninstall.sh) prior to installing AVG 8.
2.1. Distributions Currently Supported
Distribution
Installation package
Any Linux distributions
supporting the rpm
packager utility
avg85lms-{release}-{version}.{platform}.rpm
Any Linux distributions
using the Debian
packaging system
avg85lms-{release}-{version}.{platform}.deb
Any standard Linux
distribution including
those not supporting deb
or rpm installations
(Slackware, Gentoo etc.);
recommended installation
package
avg85lms-{release}-{version}.{platform}.sh
Any Linux distribution
including those not
supporting deb or rpm
installations (Slackware,
Gentoo etc.)
avg85lms-{release}-{version}.{platform}.tar.gz
FreeBSD
avg85fms-{release}-{version}.{platform}.tar.gz
Package name consist of: avg85{operating system}ms-{release}-{version}.
{platform}.{package type}. Example: avg85lms-r285-a2582.i386.tar.gz
Please note that apart from the i386 platform, amd64 is currently also supported.

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
2.1.1. Using rpm, deb packages
The rpm and deb installation packages extract files directly into installed directory.
For installation from the rpm file (Linux only), use the following command in your
shell (accessible for example using the xterm application within your X window
system):
rpm –Uvh avg-8.0.{release}-{version}.{platform}.rpm
For installation from the deb file (Linux only), use the following command in your
shell (accessible for example using the xterm application within your X window
system):
dpkg –i avg-8.0.{release}-{version}.{platform}.deb
Note: You can also use a package manager such as YUM, aptitude, Zipper etc. for
installation from the local source.
After installation, you will need to register your AVG; see chapter Product registration
for details.
2.1.2. Using sh archive
The .sh archive is created by Makeself 2.1.5, utility for building self-extractable
archives on Unix. For details see homepage at: http://megastep.org/makeself/
If you downloaded the .sh archive via a web browser, you have to set the executable
rights first:
chmod +x avg85lms-{release}-{version}.{platform}.sh
To launch the installation, it is sufficient to run the self-extractable archive as a root:
./avg85lms-{release}-{version}.{platform}.sh
This will check the archive integrity and free space on harddisk, extract itself to a
temporary directory /tmp, run the install script, and prompt the user to do the
following:
·Agree AVG installation,
·Confirm License agreement,
·Confirm detected platform,

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
·Specify user under which avg should run (the default user is root),
·Specify group under which avg should run (the default group is bin),
·Confirm creating a new directory /opt/avg/,
·Decide whether README should be displayed after installation,
·Enter license number for product registration (this step can be skipped and
performed later on, see chapter Product Registration).
To skip all mentioned questions, and set the defaults during the installation, use:
./avg85lms-{release}-{version}.{platform}.sh -- -y
2.1.3. Using tar.gz archive
The installation process is identical to using the .sh archive; only some manual steps
are required. For installation from the .tar.gz package, use the following commands
(in the directory where the package is located) to unpack its contents, change
directory and then finally run the install script (as root):
For Linux, proceed with these steps:
tar xzvf avg85lms-{release}-{version}.{platform}.tar.gz
cd avg85lms-{release}-{version}.{platform}
./install.sh
For FreeBSD, proceed with these steps:
tar xzvf avg85fms-{release}-{version}.{platform}.tar.gz
cd avg85fms-{release}-{version}.{platform}
./install.sh
During installation, you will be prompted to do the following:
·Agree AVG installation,
·Confirm License agreement,
·Confirm detected platform,

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
·Specify user under which avg should run (the default user is root),
·Specify group under which avg should run (the default group is bin),
·Confirm creating a new directory /opt/avg/,
·Decide whether README should be displayed after installation,
·Enter license number for product registration (this step can be skipped and
performed later on, see chapter Product Registration).
To skip all mentioned questions, and set the defaults during the installation, use:
./install.sh -y
2.2. The Installation Process
The installation process will automatically determine all features of your system and
will perform the proper installation of AVG 8.5 Anti-Virus for Linux/FreeBSD on
your computer. Perform installation from the packages mentioned in the table above
to install the AVG 8.5 Anti-Virus for Linux/FreeBSD command line modules -
besides the e-mail scanning daemons (see chapter AVGSCAN Command for detailed
information on this topic).
2.3. Product Registration
After the installation process you need to register your AVG 8.5 Anti-Virus for
Linux/FreeBSD unless it has been registered already during the installation process;
this applies to special packages for AVG 8.5 Anti-Virus for Linux/FreeBSD vendor
partners. The registration can be performed by launching the following command in
your shell (see chapter AVGSCAN Command for more details):
sudo avgctl -–register <your license number>
2.4. Installed Directory Tree
The program files of the AVG 8 Anti-Virus for Linux/FreeBSD are installed into the
/opt/avg/avg8 directory. Symbolic links are created into /usr/bin on linux or
/usr/local/bin on FreeBSD, leading to the /opt/avg/avg8 directory subtree.
Symbolic links for init script are instaled in various system directories:
·RedHat, Mandriva, Debian, Ubuntu, Gentoo: /etc/init.d/avgd

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
·Slackware: /etc/rc.d/rc.avgd
·FreeBSD: /usr/local/etc/rc.d/avgd.sh
Note: The default user is root, and the default group is bin (not avg as in version 7).
For running most commands (except AVGSCAN), you need to have superuser rights.
Note: For running a binary directly, use the symlink to command line:
sudo avgctl --start
This will run the AVG8INSTDIR/bin/avgwrapper.sh script via the symbolic link avgctl
in /usr/bin/. The script will export environment variables, and run the binary specified
by the symlink name.
The structure and contents of /opt/avg/avg8 are as follows:
/opt
`-- avg
`-- avg8
|-- bin binaries (daemons and utilities), avgwrapper.sh script, uninstall.sh
script (only for sh or tar.gz package)
|-- cfg binary configuration files
|-- doc README, license
|-- etc text configuration files
| `-- init.d init scripts
|-- lib AVG libraries
|-- log logging directory
|-- man man pages
| |-- man1
| `-- man5

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
|-- update temporary directories containing update data (cft and bin
differences files), backup of the data etc.
`-- var
|-- antispam antispam and SpamCatcher configuration (blacklist, whitelist),
spam definitions
|-- data license (snu), virus definitions (avi)
`-- run pid and pipe files (only present if avgd is running), dump files (if
AVG crashed previously)

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
3. On-access Scanner
In order to enable the on-access scanning using the AVG 8.5 Anti-Virus for
Linux/FreeBSD engine, you need to have at least one of the following installed on
your computer:
·RedirFS Anti-Virus Filter is a preferred solution for Linux/GNU OS running
Linux kernel version 2.6.25 and higher. On how to obtain and install these,
refer to the following chapter.
·Dazuko kernel module can be used for FreeBSD and Linux/GNU running
Linux kernel 2.2, 2.4, and 2.6.
·DazukoFS kernel module, a newer version of Dazuko which will be
discontinued; the future development is aimed to DazukoFS only.
3.1. RedirFS Anti-Virus Filter
Redirecting FileSystem (RedirFS) project aims to be general, fast, flexible open source
framework allowing to redirect native filesystem calls in the VFS layer. It is
implemented as a LKM (Linux Kernel Module), and provides well defined interface for
other LKMs which are called Filters. The latest version of RedirFS Anti-Virus Filter can
be downloaded from http://www.redirfs.org.
Installation of RedirFS Anti-Virus Filter is currently only possible from source
code: Since there is no general source code package for Anti-Virus Filter, redirfs,
libraries and user-space utilities, it is necessary to download and install each
component separately. (This is because not all components need to be installed.) For
detailed instructions, please refer to INSTALL and README files shipped within each
install tar.gz file, or see http://www.redirfs.org.
3.2. Dazuko and DazukoFS Kernel Modules
The latest version of DAZUKO or DazukoFS (referring to as DAZUKO only in the
following text) can be downloaded from http://www.dazuko.org. It is recommended
to download the latest version available, especially if you are running the kernel of
major version 2.6. If you run the kernel of higher version, it is recommended to use
the RedirFS Anti-Virus Filter instead. To install the DAZUKO kernel module, follow
the instructions provided on DAZUKO homepage (Installation_HOWTO).
Once the DAZUKO module is installed and inserted, the AVG 8.5 Anti-Virus for
Linux/FreeBSD daemons responsible for the on-access scanning will be fully
functional.

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
4. Command Line Tools
All command-line utilities are run by symbolic links (in /usr/bin) to avgwrapper.sh
script. The script exports the necessary environment variables, and runs the
respective binary. Binaries should be used under the user the AVG product is installed
under (default "root").
Any action launched via command-line can be aborted by CTRL+c, however, this will
not work if a component executes a critical action (breaking a critical action is NOT
recommended), e.g. during update when setting new configuration.
Please note that any multistring values must be put into quotation marks.
Common parameters:
-h, --help
Display help.
-v, --version
Display version.
4.1. AVGSCAN Command
The avgscan binary is intended to perform various on-demand tests via avgd
daemon. Its performance is comprehensively controlled by the command line
parameters. All scans are run multi-thread and independent, therefore it is possible to
run more than one scan at a time; however scanning performance will not be
increased this way.
Note: If there is no shared memory available, memory usage will increase with each
parallel running scan process. It is HIGHLY recommended that shared memory is
enabled on the system, especially for server installation. Enabling shared memory (on
both Linux and FreeBSD):
sysctl kernel.shmmax=<shared memory size>
Options:
-x, --exclude=<path>
Exclude path from scan. Multiple --exclude options can be
specified.
-e, --ext=<extension>
Scan files with specified extension. Multiple --ext options
can be specified. Cannot be used with --noext.
-n, --noext=<extension>
Exclude files with specified extension. Multiple --noext

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
options can be specified. Cannot be used with --ext.
--ignerrors
Do not report object scan errors.
-H, --heur
Use heuristic analysis for scanning.
-p, --pup
Scan for potentially unwanted programs.
-c, --coo
Scan cookies.
-i, --hidext
Recognize hidden extensions.
-m, --macrow
Report documents with macros.
-o, --repok
Report also clean files.
-w, --pwdw
Report password protected files.
-b, --arcbombsw
Report archive bombs.
-M, --media
Scan media files.
-B, --boot-sector
Scan boot sector.
-r, --report=<filename>
Save scan report to specified file.
-a, --arc
Scan inside archives.
-d, --debug
Verbose mode. Multiple -d options increase verbosity.
Maximum value is 3.
4.2. AVGUPDATE Command
Anti-virus systems can guarantee reliable protection only if they are updated
regularly. AVG 8.5 Anti-Virus for Linux/FreeBSD provides a reliable and fast
update service with quick response times via avgupd daemon.
Options:
-b, --no-backup
Do not backup old files.
-a, --no-daemons
Do not restart any AVG daemon processes.

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
-download
Only download and check update files to a folder specified by
--path option.
-n, --no-progress
Do not display progress information.
--path="xy"
Update folder (used if the update source is a folder, or with -d
option). Quotation marks are obligatory.
-p, --priority NUM
NUM represents the type of update:
·2 - Virus update
·3 - Program update
·4 - Optional update (default)
--source=[inet/fol
der]
inet - Update from the Internet or network (default).
folder - Update from folder.
--url="xy"
Update URL (used only if the update source is inet). If not
specified, the pre-set value from config will be used. Quotation
marks are obligatory.
-s, --antispam
Enable Anti-Spam update.

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
5. Configuration
For common configuration of AVG 8.5 Anti-Virus for Linux/FreeBSD, there are no
configuration files. Instead, configuration is managed by a configuration subsystem
which consists of:
·libavgcfg.so library (placed in /opt/avg/avg8/lib/)
·dfncfg.dat containing default configuration (placed in /opt/avg/avg8/cfg)
·.cfg files containing values differing from default configuration (placed in
/opt/avg/avg8/cfg)
·avgcfgctl utility designed to manage configuration items (placed in
/opt/avg/avg8/bin)
5.1. General Configuration
The command line utility designed to easily manage AVG 8.5 Anti-Virus for
Linux/FreeBSD configuration is avgcfgctl. This utility supports the following
operations:
a) Display configuration values
This is a default action. If no parameter is specified, the complete AVG
configuration will be displayed. Examples:
·avgcfgctl Oad.logging.public.verbosity displays only one
configuration item
·avgcfgctl Oad.logging displays whole configuration of OAD logging
·avgcfgctl logging.public.verbosity displays specified value for all
loggers
·avgcfgctl logging displays complete logging configuration for all
loggers
By default, all configuration items are displayed to stdout. For exporting
configuration to a specified file, use -f option.
b) Set configuration values
If -w option specified, the values will be set instead of being displayed. New

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
configuration values may be specified via commandline, or in a file specified by
-f option. Syntax of these commands is as follows:
·avgcfgctl Oad.logging.public.verbosity=ALL will set OAD public
logger verbosity to value ALL
·avgcfgctl logging.public.verbosity=ALL will set verbosity of all public
loggers to value ALL
Setting new configuration values will not trigger any immediate action in AVG
components; to use the new configuration as soon as possible, use -n option
which will notify all interested AVG components of the configuration change. The
component then takes respective action.
c) Check valid values
Please note that only a passed value is checked. If you enter any undocumented
value, it will be accepted, however the corresponding feature will malfunction!
5.2. Logging Configuration
This chapter describes available loggers and their configuration items. All log files are
stored in /opt/avg/avg8/log; mentioned filenames are referred to as names of the file
only, without path specification.
AVG log messages can be stored in four ways, plus any combination of them:
1.Console: The messages are sent to stderr.
2.Syslog: The messages are sent to syslog.
3.File: The messages are sent to a file. All messages will be stored in the file
(unlimited size).
4.Rolling file: The messages are sent to a rolling file. Filesize is limited; if the
size is reached, current file is closed and stored, and a new file is created.
Number of stored files is also configurable.
Currently there are 10 dedicated loggers. Each AVG component has its own logger;
one logger is common for all command-line utilities. Loggers names for use with
avgcfgctl utility are as follows:
1. Update logger, used by AVG update

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
2. WD logger, used by WatchDog
3. Sched logger, used by Scheduler
4. Avid logger, used by AviDaemon
5. Tcpd logger, used by Mail server
6. Scand logger, used by scanning engine
7. Aspam logger, used by antispam engine
8. Oad logger, used by on-access daemon
9. Cli logger, used by all command-line utilities
Configuration items of all loggers will be now listed. The '*' symbol has to be replaced
by 'private' or 'public' thus configuring private or public loggers. Private loggers are
encrypted AVG loggers, so there is no reason to set consolelog or syslog items to
true.
·logging.*.verbosity (STRING) specifies verbosity of the logger. Available
values are ERR, WARN, INFO, DEBUG, DETAIL, ALL.
·logging.*.consolelog (BOOL) specifies whether logs go to console.
·logging.*.syslog (BOOL) specifies whether logs go to syslog.
·logging.*.filelog (BOOL) specifies whether logs go to file.
·logging.*.filename (STRING) specifies name of the logging file.
·logging.*.rollog (BOOL) specifies whether private logs go to rolling file.
·logging.*.rolname (STRING) specifies name of the rolling file.
·logging.*.rolcount (DWORD) specifies maximum number of rolling files.
·logging.*.rolsize (FILESIZE) specifies maximum size of a rolling file.

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
5.3. Scheduler Configuration
Currently there are the following schedulable tasks:
1. GlobalScan task for a scheduled scan of selected areas.
2. UpdateVir task for scheduled update with priority 2. (virus update)
3. UpdateAspam task for scheduled update of antispam rules.
4. UpdateProgram task for scheduled update with priority 2. (program
update)
5. DailyPrevalence task for daily operation of XPL prevalence reporting.
6. EventPrevalence task for an event operation of XPL prevalence reporting.
All mentioned tasks have the following configuration items:
·sched.Task.Disabled (BOOL) specifies whether a task is disabled.
·sched.Task.StartType (DWORD) specifies start type of a task. Can contain
the following values:
0 - starts the task only once at sched.Times.StartTime.
1 - starts the task repeatedly, every sched.Repeat.Interval units from
sched.Repeat.BaseTime.
2 - starts the task every day at sched.Times.StartTime.
3 - starts the task every week on sched.Times.DayOfWeek, at sched.
Times.StartTime.
4 - starts the task at system startup, specifically, at AVG startup only (not
after restore from hibernation etc.).
5 - starts the task every month on sched.Times.DayOfMoth day, at sched.
Times.StartTime.
6 - starts the task only on selected days, sched.Times.SelectedDays, at
sched.Times.StartTime.
·sched.Task.MissedStartAction (DWORD) specifies what to do if the start

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
time of a task is missed. May contain value 0 meaning that missed start
should be ignored; value 1 will start the missed task.
·sched.Times.StartTime (DATE) specifies start time for some StartTypes.
·sched.Times.DayOfWeek (DWORD) specifies a day of the week when a task
should start. May contain values from 0 to 6 (0 for Sunday, 6 for Saturday).
·sched.Times.DayOfMonth (DWORD) specifies a day of the month when a
task should start.
·sched.Times.GracePeriod (DWORD) specifies how long after system startup
will a task be launched (in seconds).
·sched.Times.SelectedDays (DWORD) specifies selected days of the week on
which a task should start, as a mathematical addition of following values: 1 -
Sunday, 2 - Monday, 4 - Tuesday, 8 - Wednesday, 16 - Thursday, 32 - Friday,
64 - Saturday.
·sched.Repeat.Type (DWORD) specifies units for Repeat.Interval. May
contain 0, selecting minutes as unit for Repeat.Interval. Value 1 means hours.
·sched.Repeat.Interval (DWORD) specifies amount of units specified by
Repeat.Type.
·sched.Repeat.BaseTime (DATE) specifies base time from which the Repeat.
Interval will count.
Note: The (DATE) type values are in format YYYY-MM-DD/hh-mm-ss.
There are three additional configuration items:
·sched.Task.ScanAfterUpdate (BOOL) specifies whether a scan should start
after virus database update.
·sched.Update.Source (STRING) specifies whether update tasks should
update from Internet (value "inet"), or a folder (value "folder").
·sched.Update.Path (STRING) specifies path to the update folder if Update.
Source is set to folder.
These items appear in each task configuration, however, are only used where
applicable.
Note: Special rules for FREE license users: FREE license users cannot schedule

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AVG 8.5 Anti-Virus for Linux/FreeBSD © 2008 Copyright AVG Technologies CZ, s.r.o. All rights reserved.
UpdateAspam, and can only schedule UpdateProgram and UpdateVir to be
performed once a day.
5.4. Update Configuration
These configuration items are used by all scheduled updates, and also as defaults for
on-demand update (can be rewritten by command-line options). Update configuration
contains the following items (default settings listed where applicable):
·Default.update.Inet.UpdateServerURL=|+http://update.avg.com/
softw/80/update/|+http://backup.avg.cz/softw/80/update/|
specifies a list of available update servers. Each URL must begin with a plus
sign; if the sign is missing, the URL will not be used. This allows disabling
some of the defined servers without the need to delete them.
·Default.update.Inet.UpdateServerName=|update primary server|
update backup server| specifies hint names for Inet.UpdateServerURL.
·Default.update.Inet.disconnect_speed_limit=500; if download speed
goes below this value in B/s for a specified time, download is aborted.
·Default.update.Inet.disconnect_time_limit=300; if download goes below
specified speed for time specified by this value, download is aborted.
·Default.update.Options.Proxy.Mode=0 specifies proxy mode. May contain
the following values:
0 - do not use proxy.
1 - use proxy.
2 - try connection using proxy, and if it fails, connect directly.
·Default.update.Options.Proxy.Server (STRING) specifies proxy server.
·Default.update.Options.Proxy.Port=3128 specifies proxy port.
·Default.update.Options.Proxy.UseLogin=false specifies whether login to
proxy is needed.
·Default.update.Options.Proxy.Login (STRING) specifies login name.
·Default.update.Options.Proxy.Password (STRING) specifies login
password.