McAfee VIRUSSCAN 4.5 Administrator's Manual page 160

Using VirusScan Command-line Options
Table C-1. VirusScan command-line scanner options
/NOBREAK
/NOCOMP
/NODDA
/NODISK
/NODOC
/NOEMS
/NOEXPIRE
/NOMEM
160 McAfee VirusScan Anti-Virus Software
On-demand Disables CTRL-C and CTRL-BREAK during
scanning only scans.
Users will not be able to halt scans in progress with
/NOBREAK in use.
Use this option with /LOG to create a meaningful
audit trail of regularly scheduled scans.
On-demand Skips checking of compressed executables
scanning only created with the LZEXE or PkLite file compression
programs.
Extended
memory This reduces scanning time when you do not need
required. to run a full operation. Otherwise, by default, the
scanner checks inside executable, or
self-decompressing, files by decompressing each
file in memory and checking for virus signatures.
The scanner will still check for modifications to
compressed executables if they contain VirusScan
validation codes.
On-demand No direct disk access. This prevents the scanner
scanning only from examining the boot record.
This feature has been added to allow the scanner
to run under Windows NT.
You might need to use this option on some
device-driven drives.
Using /NODDA with the /ADN or /ADL switches
may generate errors when accessing empty
CD-ROM drives or empty Zip drives. If this occurs,
type F (for Fail) in response to the error messages
to continue the scan.
On-access Does not scan boot sector while loading the
scanning only VShield scanner.
On-demand Does not scan Microsoft Office files.
scanning only
On-access Keeps the VShield scanner from using extended
scanning only memory (XMS).
On-demand Disables the "expiration date" message if the
scanning only VirusScan data files are out of date.
None Does not scan memory for viruses.
This greatly reduces scan time.
Use /NOMEM only when you are absolutely
certain that your computer is virus-free.