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Text File | 1990-08-02 | 42KB | 1,088 lines

▀█▀▀▀▀▀▀▀▀▄ ▄▀▀▀▀▀▀▀▀█▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀█▀ ▀▄ ▀▄ ▄▀ ▄▀ ▄▀ ▀▄ ▀▄ ▄▀ ▄▀ ▄▄▄▄▄▄▄▄▄▄▄▄▀ ▀▄ ▀▄ ▄▀ ▄▀ ▄▀ ▀▄ ▀ ▄▀ ▄▀ ▀▄ ▄▀ ▀▀▀▀▀▀▀▀▀▀█▀ ▀▄ ▄▀ ▄▀ ▀▄▄▄▄▄█▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▀ █ █ █ █▀▀▀▀▀▄ █ █ █▀▀▀▀▀▀ ██ █ █ █ █ █ █ █▄▄▄▄▄▄ ▀█ ▄▀ ██ ██▀▀█▀ ██ █ ██ ▀▄▀ ██ ██ ▀▄ ██▄▄▄▄█ ▄▄▄▄▄██ █▀▀▀▀▀█ █▀▀▀▀▀▀ █▀▀▀▄ █ ▀▀▀█▀▀▀ █▀▀▀▀▀▄ █▀▀▀▀█ █ █ █▄▄▄ █ █ █ █ █ █ █▄▄▄▄█▄ █ ██ ██ ██ █ █ ██ ██▀▀█▀ ██ █ ██ ██▄▄▄▄█ ██▄▄▄▄▄ ██ ▀▄█ ██ ██ ▀▄ ██ █ ██▄▄▄▄▄ Version 1.00 Copyright (C) 1990 by Alejandro L. Abello the High-flying Hard-lander SHARE-WARE NOTICE: Virus Central is distributed as share-ware. You are granted the limited license to use the program for a trial period (about three weeks) and are encouraged to share it with friends and associates, provided that copies are distributed in their complete and unmodified form, no amount is charged for the program (with the exception of a distribution fee not to exceed $5.00), and it is not distributed as part of a promotional package. Registration is required for continued use of Virus Central passed the trial period. Refer to the accompanying file, "REGISTER.DOC," for more information. Bear in mind that registration for Virus Central DOES NOT include the VirusScan and CleanUp programs, by McAfee Associates. If you have not yet done so, you are strongly encouraged to register your copies of these programs. Refer to the documentation and registration form accompanying the VirusScan and CleanUp programs for more information. The Virus Central program and manual are provided "AS IS" and without warranties as to performance of merchantibility and any other warranties expressed or implied. In the course of testing the program for compatibility and suitability to purpose, the user of must assume the entire risk of using Virus Central. While much care was made in the preparation of the Virus Central program and manual, the author shall assume no responsibility for defects in the program and/or errors or ommisions in the manual. ** TABLE OF CONTENTS ** Page ================================================================ INTRODUCTION................................................ 1 SYSTEM REQUIREMENTS......................................... 2 INSTALLATION................................................ 2 USING VIRUS CENTRAL......................................... 3 Screen Lay Out........................................... 3 General Notes On Mouse Use............................... 4 Options From The Main Menu And User's Screen............. 4 THE VIRUS SCAN MENU......................................... 6 THE CLEAN UP MENU........................................... 8 THE SET UP MENU............................................. 10 THE PROGRAM SUB-MENU..................................... 10 THE VIRUS SCAN SUB-MENU.................................. 11 THE CLEAN UP SUB-MENU.................................... 11 THE VIRUS LIST SUB-MENU.................................. 12 SAVE OPTIONS............................................. 13 THE DOS SHELL OPTION........................................ 14 THE QUIT OPTION............................................. 14 THE CLEAN UP SEQUENCE....................................... 15 IF YOU HAVE TROUBLE......................................... 16 ================================================================ V I R U S C E N T R A L Version 1.00 Copyright (C) 1990 by Alejandro L. Abello the High-flying Hard-lander INTRODUCTION Virus Central is a shell program that simplifies the use of VirusScan and CleanUp, both from McAfee Associates. It provides a menu oriented environment that does away with the need to memorize command line parameters. It is ideally suited for locations that devote a computer to checking incoming diskettes for virus infections (i.e. the computer lab of a college). The user interface is graphical and works well with a mouse, although keyboard use is equally pleasant. As an added bonus, Virus Central has a built-in screen-saver that clears the screen after a specified amount of time to prevent screen image burn-in. The single most powerful feature of Virus Central is its Clean Up sequence. As a disk is scanned using VirusScan, infections detected are noted and placed in a queue. After the scan is completed, Virus Central executes CleanUp and passes the information stored in the queue to the program, effectively automating the process. This feature is invaluable for cleaning disks with multiple file infections. This manual has been prepared to familiarize you with Virus Central. Although already fairly easy to use, I suggest you take some time to go over this text to learn more about the program. I have tried to be as thorough as possible in order for users to fully benefit from Virus Central. A special note should be made that the samples of the menus in the text are not exact replicas of the menus that you will see on the screen; I had to make do with what was available from the text character set. I would like to express my gratitude to Mr. John McAfee, who reviewed and tested a preliminary copy of the program, and whose kind words convinced me of its potential. And all the guys 'n gals in the College of San Mateo's computer lab (Charlotte, Mike, John, Mark, Dave, Tonette, Robin, Stan, Steve, Yulin, and Andy), for pushing the project to a higher ground. THANK YOU, All! Alejandro L. Abello The High-flying Hard-lander Page 1 SYSTEM REQUIREMENTS: To get the most from Virus Central, your system should have the following: * 384k RAM (MINIMUM) - This is a theoretical minimum, although I have only tested Virus Central on machines with 512k and greater. * MS-DOS/PC-DOS 2.1 or later. * A hard disk drive - it may be possible to run Virus Central off of two floppy disk drives or even a RAM drive, but it was intended to run off of a hard disk. * A CGA compatible video adapter/display - Virus Central uses the 640 x 200 pixel, 2 color graphics mode, requiring a CGA compatible machine (most EGA and VGA cards are compatible). * A mouse (optional). INSTALLATION Virus Central requires 2 program files to operate, along with VirusScan and CleanUp. The files are: CENTRAL.EXE - The main Virus Central program CENTRAL.CFG - The configuration file for Virus Central To install, simply copy these two files to the same directory on your hard disk as VirusScan and CleanUp. Make sure that you have set the DOS "PATH" variable to that directory, so that you may execute the program from any other directory. Virus Central (or, simply, "Central") normally searches the path for the configuration file. The distribution copy of Central is configured for a machine that has three disk drives (A, B, and C), drives A and B designated as the "Quick-Key" disk drives, the VirusScan and CleanUp programs installed in the root directory of the hard disk ("C:\"), the Stoned / Marijuana virus specified as the default virus, and the list of viruses recognized by CleanUp 64. If you wish to make changes to this configuration, refer to the "Set Up Menu" discussion later in this text. Page 2 USING VIRUS CENTRAL To use Virus Central, simply enter "CENTRAL" at the DOS prompt. Central normally looks for a mouse driver, and, if a driver is installed, initializes the program's mouse handling routines. If your mouse driver is installed and you prefer to use Central without the mouse, enter "CENTRAL /NOMOUSE" instead. Screen Lay Out Assuming everything works alright, Central's user screen will appear. The main menu, located on the top row of the screen, presents you with 5 options: Virus Scan : allows you to modify the options of VirusScan and execute the program Clean Up : allows you to modify the options of CleanUp and execute the program Set Up : allows you to modify the configuration of Virus Central and save them to disk DOS Shell : loads up a copy of the DOS command processor Quit : terminates Virus Central and returns to DOS Aside from the above mentioned options, there is a small diamond character on the upper-left corner of the screen, used for manually invoking the screen-saver with a mouse. On the lower-right portion of the screen are four boxes, indicating the "Quick-Key" options; function keys [F1] to [F4] assigned to scan/clean user selected disk drives. On the upper-right portion of the screen is a small box containing the ID of the current virus (by default, this is "[STONED]"). This tells you which virus a Quick-Key clean will remove. On the lower-left, occupying a majority of the user's screen, is the VirusScan/CleanUp window, which I affectionately refer to as the "black box." Output from VirusScan and CleanUp, which normally goes to the text screen, is diverted to this window, so that you never have to leave the Central user's screen. This window has a text resolution of 80 x 22 characters; three lines had to be sacrificed to make the black box fit right on the screen, but this affects VirusScan and CleanUp minimally. ================================================================ IMPORTANT! Because the main menu options "Virus Scan" and "Clean Up" are directly related to the "VirusScan" and "CleanUp" programs, respectively, it will be the notation of this manual to refer to Page 3 "Virus Scan" and "Clean Up" (with spaces between the words) as the program options of Virus Central, and "VirusScan" and "CleanUp" (without spaces between the words) as the actual programs of McAfee Associates; the executable files "SCAN.EXE" and "CLEAN.EXE" ================================================================ General Notes On Mouse Use Most of the options in Virus Central are mouse selectable. To select an option with a mouse, position the mouse cursor (a black arrow) over the desired option and press any key on the mouse. This mouse selection process of positioning and pressing will, from here on, be refered to as "clicking," and any phrase that goes "click on..." or "clicking on..." will refer to this procedure. Some options, such as the Quick-Keys on the user's screen, are enclosed in little boxes. These options are mouse selectable by clicking anywhere inside the box. When entering a string, such as the overlay extension list in the Virus Scan menu, or a number, such as the color setting in the Program sub-menu, a mouse may be used to select the option, but cannot be used to position the cursor for editting or entering the string/number. Options From The Main Menu And User's Screen Options are easily selected using the keyboard or a mouse (if one is available). When an option is available, it is shown on the screen as bold characters. When an option is not available, it is "fuzzed" out, and attempts to select it will fail. There are three ways to select options from the main menu. You could use the left and right arrow keys to move the cursor over the desired option and press [Enter] to select it. A quicker way is to press the letter key corresponding to the underlined letter of the option (i.e. press [V] to select the Virus Scan option). The third method would be to click on it with the mouse. Note that the Virus Scan, Clean Up, and Set Up options produce their own menus, and even sub-menus. Function keys [F1] to [F4] are defined as Quick-Keys; [F1] and [F2] execute the VirusScan program, and [F3] and [F4] execute the CleanUp program. The parameters passed to the VirusScan and CleanUp programs are those set from the Virus Scan, Clean Up, or St Up menus. By default, disk drives A and B are designated as Quick-Key disk drives, where: [F1] executes VirusScan on the default directory of drive A, [F2] executes VirusScan on the default directory of drive B, Page 4 [F3] executes CleanUp on the default directory of Drive A, and [F4] executes CleanUp on the default directory of drive B. The Quick-Key disk drive assignments may be changed from the Set Up menu's Program sub-menu. It is advisable to designate floppy disk drives as Quick-Key since floppy disks are the ones most often checked for infections. One of Virus Central's most attractive features is its built-in screen-saver. The screen-saver prevents Central's graphics screen from "burning into" your monitor by blanking your screen and displaying psychedelic, seemingly random graphics. Pressing any key or mouse button returns you to the program, at the point you left off. Normally, the screen-saver is automatically triggered by Central after a set number of minutes of "idle time" (3 minutes, by default). For our purposes, idle time is defined as a period wherein Central awaits keyboard or mouse input and is not executing any other task. From the user's screen, you can manually invoke the screen-saver by pressing the [B] key or by clicking on the diamond character on the upper-left corner of the screen. The number of minutes of idle time Central waits, the "time lapse," may be set from the Set Up menu's Program sub-menu. Page 5 THE VIRUS SCAN MENU Selecting the Virus Scan option from the main menu pops the Virus Scan menu. This menu allows you to set the parameters of the VirusScan program and execute it. Although you can execute VirusScan using the Quick-Keys, this menu allows you to scan a drive not designated as a Quick-Key drive. The Virus Scan menu has 10 fields that affect the execution of VirusScan and only two options; "Okay," which accepts any changes made and executes VirusScan, and "Cancel," which cancels any changes made and returns to the main menu. It looks something like this: ┌────────────────────────────────────────────┬───────────┐ │Disk Drive....................... : [-A-] │F10: Okay │ │Skip inside scan of LZEXE files.. : NO ├───────────┤ │Overwrite & delete infected files : NO │Esc: Cancel│ │Scan memory for all viruses...... : NO └───────────┤ │Scan all files................... : NO │ │Scan listed overlays............. : NO │ │Skip memory scan................. : NO │ │Scan multiple floppies........... : NO │ │Attempt automatic Clean Up....... : NO │ │Overlay extension list........... : .OVL .OVG .OV1 .OV2 │ │File path to scan................ : │ └────────────────────────────────────────────────────────┘ All of these fields, with the exception of "Attempt automatic Clean Up," correspond to the command line parameters of the VirusScan program. To select a field, use the up and down arrow keys to position the cursor and press [Enter] to select it. You may also click on a field with the mouse to select it. The first field specifies the disk drive to scan. When this field is selected, you will be presented with a string of letters, indicating the available disk drives. Select a disk drive from the list by using the left and right arrow keys to position the cursor over the letter of the disk drive you wish to scan and press [Enter] (i.e. position the cursor over "B" if you wish to scan drive B:). A simpler way would be to press the letter key corresponding to the desired drive (i.e. press [B] to scan drive B:). Note that the string displayed on the screen is only five characters wide. The list of available disk drives may actually be longer; use the left and right arrow keys to scroll through the available disk drives. Central does not allow you to specify more than one drive letter at a time, although VirusScan can handle it. The next seven fields "toggle" the parameter options; you either want them when VirusScan executes (YES) or you do not want them (NO). When you position the cursor over these fields and press [Enter], or click on them with the mouse, the setting of the fields change from "NO" to "YES," and from "YES" to "NO." Page 6 The first six of these fields correspond to the VirusScan command line parameters as follows: Skip inside scan of LZEXE files -> /NLZ Overwrite & delete infected files -> /D Scan memory for all viruses -> /M Scan all files -> /A Scan listed overlays -> /E Skip memory scan -> /NOMEM Scan multiple floppies -> /MANY The last toggle field, "Attempt automatic Clean Up," specifies whether or not Central will execute the Clean Up sequence right after the scan is completed, without prompting you to begin the sequence. Regardless of the setting here, Central will maintain a queue of detected infections. The next field is the overlay extension list. This is a string specifying the extensions of overlay files that scan will examine if the "/E" parameter is specified. The extensions should begin with a period, followed by the three character extension, and separated by spaces (i.e. ".OVR .OVG .OVL"). The maximum length of this string is 40 characters. The last field in the menu sets the file path that VirusScan will check. This is normally blank, in which case the entire disk is checked. But if you wish to localize the scan to a single directory, or even a single file, set this string to the file path you wish to scan. Do not specify the drive, since it is already specified in the first field of this menu. Once you have all the parameters set, select the "Okay" option by pressing [F10] (or clicking on the "Okay" box) and Central will execute VirusScan with the set data. Note that the changes made to the fields will become the current settings and will remain active. If you change your mind and decide that you do not wish to execute VirusScan, select the "Cancel" option by pressing [Esc] (or clicking on the "Cancel" box) and Central will return to the main menu. Any changes made to the fields in the Virus Scan menu will be lost; all settings reverting to their previous states. Page 7 THE CLEAN UP MENU Selecting the Clean Up option from the main menu pops the Clean Up menu. This menu allows you to set the parameters of the Clean Up program and execute it. Although you can execute CleanUp using the Quick-Keys, this menu allows you to clean a drive not designated as a Quick-Key drive. The Clean Up menu has five fields that affect the execution of CleanUp and only two options; "Okay," which accepts any changes made and executes CleanUp, and "Cancel," which cancels any changes made and returns to the main menu. It looks something like this: ┌──────────────────────────────────┬───────────┐ │Disk Drive............. : [-A-] │F10: Okay │ │Check all files........ : NO │Esc: Cancel│ │Clean multiple floppies : NO └───────────┤ │Virus Name............. : Stoned / Marijuana │ │File path to clean..... : │ └──────────────────────────────────────────────┘ All of these fields correspond to the command line parameters of the CleanUp program. To select a field, use the up and down arrow keys to position the cursor and press [Enter] to select it. You may also click on a field with the mouse to select it. The first field specifies the disk drive to clean. When this field is selected, you will be presented with a string of letters, indicating the available disk drives. Select a disk drive from the list by using the left and right arrow keys to position the cursor over the letter of the disk drive you wish to clean and press [Enter] (i.e. position the cursor over "B" if you wish to clean drive B:). A simpler way would be to press the letter key corresponding to the desired drive (i.e. press [B] to clean drive B:). Note that the string displayed on the screen is only five characters wide. The list of available disk drives may actually be longer; use the left and right arrow keys to scroll through the available disk drives. Central does not allow you to specify more than one drive letter at a time, although CleanUp can handle it. The next two fields "toggle" the parameter options; you either want them when CleanUp executes (YES) or you do not want them (NO). When you position the cursor over these fields and press [Enter], or click on them with the mouse, the setting of the fields change from "NO" to "YES," and from "YES" to "NO." These two fields correspond to the CleanUp command line parameters as follows: Clean all files -> /A Clean multiple floppies -> /MANY Page 8 The next field is the name of the virus CleanUp will remove from the disk. Selecting this field pops a sub-menu, displaying a list of virus names from which you can select. Use the up and down arrow keys to position the cursor over the desired virus name and press [Enter]. You may also select a virus name by clicking on it with the mouse (click on the up and down arrows on the menu to scroll through the list). When you have selected a virus name, select the "Okay" option from the sub-menu, either by pressing [F10] or clicking on the "Okay" box, to make CleanUp remove this virus. If you change your mind, select the "Cancel" option from the sub-menu, either by pressing [Esc] or clicking on the "Cancel" box, and the virus name selected will be ignored. In either case, you will return to the Clean Up menu. The last field in the menu sets the file path that CleanUp will clean. This is normally blank, in which case the entire disk is checked for the infection. But if you wish to localize the process to a single directory, or even a single file, set this string to the file path you wish to clean. Do not specify the drive, since it is already specified in the first field of this menu. Once you have all the parameters set, select the "Okay" option by pressing [F10] (or clicking on the "Okay" box) and Central will execute CleanUp with the set data. Note that the changes made to the fields will become the current settings and will remain active. If you change your mind and decide that you do not wish to execute CleanUp, select the "Cancel" option by pressing [Esc] (or clicking on the "Cancel" box) and Central will return to the main menu. Any changes made to the fields in the Clean Up menu will be lost; all settings reverting to their previous states. Page 9 THE SET UP MENU The Set Up option from the main menu pops the Set Up menu. From here you can configure Virus Central to your computer and set the default parameters for VirusScan and CleanUp. If your computer does not conform to the default set up, this should be the first option from the main menu that you select before anything else. There are five options in this menu, the first four of which pop individual sub-menus. To select an option from this menu, use the up and down arrow keys to move the cursor over the desired option and press [Enter]. Alternatively, you can click on an option with the mouse. When you are done making changes, you can return to the main menu by pressing [Esc], or clicking anywhere outside the menu borders. THE PROGRAM SUB-MENU The Program sub-menu configures Virus Central to your computer. If your machine is configured differently from the default settings, be sure to make the necessary changes in this menu. The Program sub-menu has five fields that affect the execution of Virus Central and only two options; "Okay," which accepts any changes made, and "Cancel," which cancels any changes made. Either option returns you to the Set Up menu. The program sub-menu looks something like this: ┌───────────────────────────────────────────────────────────┐ │Virus Scan / Clean Up directory path : C:\ │ │Disk drive list..................... : ABC │ │Quick-key Scan / Clean disk drives.. : AB ┌───────────┤ │Color setting....................... : 16 │F10: Okay │ │Screen saver time lapse (minutes)... : 3 │Esc: Cancel│ └───────────────────────────────────────────────┴───────────┘ To select a field, use the up and down arrow keys to position the cursor. You may also click on a field with the mouse to select it. Unlike the fields in the Virus Scan and Clean Up menus, the fields in this sub-menu are all similar; they all contain editable data. For this reason, you do not have to press [Enter] to begin editing/entering data. In this sub-menu, the cursor is always in an "edit ready" position. The first field specifys the directory path to the VirusScan and CleanUp programs. For example, if these programs are in a directory called "VIRUS" in the C: drive, this field should be set to "C:\VIRUS\" When Central first executes, it checks this specified directory for the two programs. If it cannot find them there, it will search the other directories in the DOS PATH, which can take a little longer. It is a good idea to have the Page 10 VirusScan, CleanUp, and Virus Central programs all in the same directory, to make it easier for Central to locate the necessary program files. The next field is the disk drive list. This is a string that specifys the drive letters of all physical disk drives on your machine. For example, if your machine has four disk drives, labeled A:, B:, C:, and D:, the disk drive list should be "ABCD" This string can contain the capital letters "A" to "Z." Bear in mind that you should only specify "physical" disk drives. Do not specify network disk drives and RAM drives. The third field is the Quick-Key disk drive list. This is a two character string specifying which of the available disk drives will be assigned as Quick-Key disk drives. Choose any two from the disk drive list. If this field is blank, then no disk drive is assigned as a Quick-Key drive. If only one disk drive is specified, then only that drive is assigned as a Quick-Key drive. The next field sets the color of the display. This is a number from 0 and 16. On true CGA systems, the color setting affects the foreground color and leaves the background color always black. On most EGA and VGA systems, however, changing the color setting has funny results; the background and foreground colors change in, mostly, funny combinations. Normally, you are only allowed to use values from 0 to 15, but color setting 16 was provided to force a white-on-black screen. The last field sets the screen saver time lapse. This is the number of minutes of idle time Central waits before invoking the screen-saver. This is a number between 1 to 60. A safe setting is about three minutes. THE VIRUS SCAN SUB-MENU The Virus Scan sub-menu allows you to set the parameters for the Virus Scan option from the main menu. This sub-menu is the same as the Virus Scan menu, except that the "Disk drive" and "File path to scan" fields are disabled, and you cannot execute VirusScan from here. Refer to the "Virus Scan Menu" section on using this sub-menu. Selecting the "Okay" option accepts all changes made to the fields and makes them current, while selecting "Cancel" restores the fields to their previous settings. In either case, you will return to the Set Up menu. THE CLEAN UP SUB-MENU The Clean Up sub-menu allows you to set the parameters for the Clean Up option from the main menu. This sub-menu is the same as the Clean Up menu, except that the "Disk drive" and "File path to clean" fields are disabled, and you cannot execute CleanUp Page 11 from here. Refer to the "Clean Up Menu" section on using this sub-menu. Selecting the "Okay" option accepts all changes made to the fields and makes them current, while selecting "Cancel" restores the fields to their previous settings. In either case, you will return to the Set Up menu. THE VIRUS LIST SUB-MENU The Virus List sub-menu is a maintenance feature for updating and modifying the virus list used by the Clean Up menu. You can add, edit, or remove virus names and IDs from the list. It is a good idea to use this feature whenever new versions of the VirusScan and CleanUp programs are released, keeping the virus list up to date. The virus list can contain up to 300 virus names and IDs. Also, Central requires the first twenty virus names and IDs as the bare minimum, so you will not be able to edit or remove the first twenty viruses on the list. The Virus List sub-menu is the same one used in the Clean Up menu, except that it has three more options for adding, editing, and removing viruses from the list. It looks something like this: ┌──────────────────────────────┬─┬───────────┐ │Ashar ├─┤ │ │Disk Killer │ │F1 : Add │ │1701 / Cascade │ │F2 : Edit │ │Stoned / Marijuana │ │F3 : Remove│ │Ping Pong-B / Cascade Boot │ │F10: Okay │ │Ping Pong / Bouncing Dot │ │Esc: Cancel│ │Jerusalem-B ├─┤ │ └──────────────────────────────┴─┴───────────┘ To add a virus to the list, select the "Add" option (by pressing [F1] or clicking on the "Add" box) and you will be prompted to enter a new virus name and ID. When they are entered, select the "Okay" option (by pressing [F10] or clicking on the "Okay" box) to add the virus name and ID to the virus list. If you change your mind and decide that you do not want to add it to the list, select "Cancel" (by pressing [Esc] or clicking on the "Cancel" option). In either case, you will return to the Virus List sub-menu. To edit a virus name and/or ID on the list, use the up and down arrow keys to position the cursor over the name of the virus on the list (or click on it), then select the "Edit" option (by pressing [F2] or clicking on the "Edit" box). You will be prompted to edit the virus name and ID. When done, select the "Okay" option to update the virus name and ID. If you change your mind and decide that you do not want the name and ID changed, select "Cancel." In either case, you will return to the Virus List sub-menu. Page 12 To remove a virus name and ID from the list, use the up and down arrow keys to position the cursor over the name of the virus on the list (or click on it), then select the "Remove" option (by pressing [F3] or clicking on the "Remove" box). Select the "Okay" option to remove the virus from the list. If you change your mind, select the "Cancel" option. In either case, you will return to the Virus List sub-menu. When all changes are made, select "Okay" to make the changes to the virus list current. Selecting "Cancel" restores the virus list to its previous state. In either case, you will return to the Set Up menu. SAVE OPTIONS Selecting "Save Options" from the Set Up menu writes the current settings of Virus Central to the CENTRAL.CFG file, and these changes will also be in effect the next time you execute Central. If you have modified any of Central's settings and you do not save them using this option, you will be warned and given the opportunity to save them when you select the Quit option from the main menu. Page 13 THE DOS SHELL OPTION The DOS Shell option from the main menu loads up the DOS command processor. This returns you to the text screen where you may issue DOS commands and even run other programs. Virus Central remains resident in memory and, as such, limits the amount of memory available to you in the DOS shell. This feature is particularly useful if you ever need to run VirusScan or CleanUp manually. To return to Central, enter "EXIT." THE QUIT OPTION The Quit option terminates Virus Central and returns you to DOS. If Central's configuration has changed and they are not yet saved, you will be warned and given the opportunity to save the changes. Page 14 THE CLEAN UP SEQUENCE Virus Central's most most powerful feature is the Clean Up sequence. As a disk is scanned using VirusScan, infections detected are noted and placed in a queue. After the scan is completed, Central executes CleanUp and passes the information stored in the queue to the program, effectively automating the process. This feature is invaluable for cleaning disks with multiple file infections. The queueing process is, for all intents and purposes, automatic; Central will always enqueue infections detected by VirusScan. There are points, though, that you should be aware of about the feature: * The queue can hold up to 300 individual infections. If there are more than 300 on the disk (that is one messed up disk!), VirusScan will continue to scan, but Central will ignore those passed the limit. * Central will always enqueue detected infections, even if VirusScan is executed with the "overwrite & delete infected files" option. * The Clean Up sequence works on individual files; that is, it executes CleanUp on each file where a virus was detected, even if the same virus was discovered on more than one file. * The Clean Up sequence executes CleanUp without the "check al files" and "clean multiple disks" options, even if they are set from the Clean Up menu. Also, the memory scan is disabled. * If VirusScan detects infections, and the "attempt automatic clean up" option is off, you are asked if you wish to initiate the Clean Up sequence. If you decide not to, the queue is not cleared. It will prompt you, again, if you wish to initiate the sequence when you attempt to scan or clean another disk. * The Clean Up sequence may be interrupted by pressing [Ctrl-C]. Page 15 IF YOU HAVE TROUBLE... That's about all there is to know about Virus Central. If a point was missed or something is unclear, whether about the program or registration, feel free to contact me at this address: Alejandro L. Abello 2937 Sherwood Drive San Carlos, CA. 94070 Tel. No.: (415) 369-1811 You may also contact me at the above telephone number. If I am not home, please leave a message and I will get back to you (provided I can call collect). Also, please call during reasonable hours of the day (9:00am to 5:00pm PST). Be forewarned that I will not entertain truly technical questions; the ones that may divulge precious trade secrets. The inner workings of Virus Central must be considered sacred. Page 16