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Emsisoft Commandline Scanner
Emsisoft Commandline Scanner is a console application for professionals who don't need a graphical user interface. The scanner is included in the following products:
- Emsisoft Anti-Malware
- Emsisoft Anti-Malware for Server
- Emsisoft Internet Security
- Emsisoft Emergency Kit
(can be combined)
Scans specified disks, folders or files for malware infections. Folder paths must be enclosed in quotation marks. Multiple paths need to be delimited by commas.
Example: a2cmd /f="c:\windows\","c:\program files\"
Abbreviation for running a quick system check. Scans all active programs, malware traces (registry, files) and Tracking Cookies.
Scans all places that Malware typically infects. A Malware Scan is the best choice for most users. It's fast and thoroughly examines the whole computer for any active Malware infections.
Scans for active rootkits.
Scans all active programs.
Scans the registry and the file/folder structures on a hard disk for malware traces.
Scans all cookies for Tracking Cookies. Supported browsers: MS Internet Explorer, Mozilla Firefox.
Scan a file by handle. Requires the ID of the process that keeps the handle.
/b=[pointer] /bs=[size] /pid=[PID]
Scan a data buffer in memory. Requires the buffer size and the ID of the process that keeps the buffer.
(for precise adjustment of the scan parameters)
Also detects Potentially Unwanted Programs (programs that are not specifically malicious but are often installed without user consent)
Scans also within archive files such as ZIP, RAR, CAB, and self-extracting archives.
Scans also hidden data flows in NTFS disks.
Uses the advanced caching to avoid unnecessary re-scans.
Scans with direct disk access mode which is slower. Not required when the rootkit scan is enabled.
Saves a scan log to the specified file. The text-based log is saved in Unicode format.
Example: a2cmd /malware /log="c:\scans\scan.log"
Same as the /l bzw /log parameter, but the log is saved in ANSI Format.
Scans only files with the specified extensions.
Example: a2cmd /f="c:\windows\" /x="exe, com, scr, bat"
Scans all files except those with the specified extensions.
Example: a2cmd /malware /xe="avi, bmp, mp3"
Uses the specified whitelist file for excluding certain files, folders or malware names in the scan. Whitelist files must be text files where each line is one of the items to be excluded.
Example: a2cmd /f="c:\" /wl="c:\whitelist.txt"
Deletes all detected malware objects at once during the scan. Also deletes references to the detected file, e.g. autorun entries in the registry.
Deletes all detected malware objects at once during the scan. Only the detected file itself is deleted. Quicker than /d or /delete.
Immediately place detected malware in quarantine during the scan. The quarantine folder can be specified. Detected objects are saved and encrypted there so that they cannot cause further damage.
Defines if the Anti-Malware service is to be used for scanning.
Background: When running many short scans, loading the scan engine afresh at each start of a2cmd is inefficient. Using the /s or /service parameter makes the Anti-Malware service load the engine and keep it loaded for later scans. If the service is not yet started or installed it is installed and started when the service parameter is run for the first time. This command is not available in Emsisoft Emergency Kit because the service component is not included.
Quarantine treatment parameters
(to be used alone)
Lists all objects that are under quarantine. The consecutive number at the beginning of each line can be used for deleting or restoring (zero-based index).
Restores an object under quarantine with the specified index number. If no number is specified, all objects are restored.
Example: a2cmd /qr=0
Deletes an object under quarantine with the specified index number.
(to be used alone)
Must be used alone. Runs an online update of all program components and signatures. If a2cmd is used as a part of Emsisoft Anti-Malware, this command triggers an update of the whole Emsisoft Anti-Malware package.
Downloads the latest beta updates instead of stable updates.
Sets a proxy host and port number to be used for connections to the update server.
Sets a proxy username if the proxy requires authentication.
Sets a proxy password if the proxy requires authentication.
(to be used alone)
Shows an overview of all available parameters.
0 - No infections were found
1 - Infections were found
Will it run on my PC?
Yes - assuming that you’re using Windows 7, 8, 10 or Windows Server (2008 R2, 2012) - with the latest service pack installed. All features are fully functional on x64 systems too.
The Emsisoft Commandline Scanner as part of the Emsisoft Emergency Kit is free for private use. For commercial use please purchase a license of one of our available business products.