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LEARN ABOUT SUSE
clamscan
clamscan(1) Clam AntiVirus clamscan(1)
NAME
clamscan - scan files and directories for viruses
SYNOPSIS
clamscan [options] [file/directory/-]
DESCRIPTION
clamscan is a command line anti-virus scanner.
OPTIONS
Most of the options are simple switches which enable or disable some features. Options marked with [=yes/no(*)] can be optionally followed
by =yes/=no; if they get called without the boolean argument the scanner will assume 'yes'. The asterisk marks the default internal setting
for a given option.
-h, --help
Print help information and exit.
-V, --version
Print version number and exit.
-v, --verbose
Be verbose.
--debug
Display debug messages from libclamav.
--quiet
Be quiet (only print error messages).
--stdout
Write all messages (except for libclamav output) to the standard output (stdout).
-d FILE/DIR, --database=FILE/DIR
Load virus database from FILE or load all virus database files from DIR.
--official-db-only=[yes/no(*)]
Only load the official signatures published by the ClamAV project.
-l FILE, --log=FILE
Save scan report to FILE.
--tempdir=DIRECTORY
Create temporary files in DIRECTORY. Directory must be writable for the '' user or unprivileged user running clamscan.
--leave-temps
Do not remove temporary files.
-f FILE, --file-list=FILE
Scan files listed line by line in FILE.
-r, --recursive
Scan directories recursively. All the subdirectories in the given directory will be scanned.
--cross-fs=[yes(*)/no]
Scan files and directories on other filesystems.
--bell Sound bell on virus detection.
--no-summary
Do not display summary at the end of scanning.
--exclude=REGEX, --exclude-dir=REGEX
Don't scan file/directory names matching regular expression. These options can be used multiple times.
--include=REGEX, --include-dir=REGEX
Only scan file/directory matching regular expression. These options can be used multiple times.
-i, --infected
Only print infected files.
--remove[=yes/no(*)]
Remove infected files. Be careful.
--move=DIRECTORY
Move infected files into DIRECTORY. Directory must be writable for the '' user or unprivileged user running clamscan.
--copy=DIRECTORY
Copy infected files into DIRECTORY. Directory must be writable for the '' user or unprivileged user running clamscan.
--bytecode[=yes(*)/no]
With this option enabled ClamAV will load bytecode from the database. It is highly recommended you keep this option turned on, oth-
erwise you may miss detections for many new viruses.
--bytecode-trust-all[=yes/no(*)]
This option disables safety checks and makes ClamAV trust all bytecode. It should only be used for debugging.
--bytecode-timeout=N
Set bytecode timeout in milliseconds (default: 60000 = 60s)
--detect-pua[=yes/no(*)]
Detect Possibly Unwanted Applications.
--exclude-pua=CATEGORY
Exclude a specific PUA category. This option can be used multiple times. See http://www.clamav.net/support/pua for the complete list
of PUA
--include-pua=CATEGORY
Only include a specific PUA category. This option can be used multiple times. See http://www.clamav.net/support/pua for the complete
list of PUA
--detect-structured[=yes/no(*)]
Use the DLP (Data Loss Prevention) module to detect SSN and Credit Card numbers inside documents/text files.
--structured-ssn-format=X
X=0: search for valid SSNs formatted as xxx-yy-zzzz (normal); X=1: search for valid SSNs formatted as xxxyyzzzz (stripped); X=2:
search for both formats. Default is 0.
--structured-ssn-count=#n
This option sets the lowest number of Social Security Numbers found in a file to generate a detect (default: 3).
--structured-cc-count=#n
This option sets the lowest number of Credit Card numbers found in a file to generate a detect (default: 3).
--scan-mail[=yes(*)/no]
Scan mail files.
--phishing-sigs[=yes(*)/no]
Use the signature-based phishing detection.
--phishing-scan-urls[=yes(*)/no]
Use the url-based heuristic phishing detection (Phishing.Heuristics.Email.*)
--heuristic-scan-precedence[=yes/no(*)]
Allow heuristic match to take precedence. When enabled, if a heuristic scan (such as phishingScan) detects a possible virus/phish it
will stop scan immediately. Recommended, saves CPU scan-time. When disabled, virus/phish detected by heuristic scans will be
reported only at the end of a scan. If an archive contains both a heuristically detected virus/phish, and a real malware, the real
malware will be reported Keep this disabled if you intend to handle "*.Heuristics.*" viruses differently from "real" malware. If a
non-heuristically-detected virus (signature-based) is found first, the scan is interrupted immediately, regardless of this config
option.
--phishing-ssl[=yes/no(*)]
Block SSL mismatches in URLs (might lead to false positives!).
--phishing-cloak[=yes/no(*)]
Block cloaked URLs (might lead to some false positives).
--algorithmic-detection[=yes(*)/no]
In some cases (eg. complex malware, exploits in graphic files, and others), ClamAV uses special algorithms to provide accurate
detection. This option can be used to control the algorithmic detection.
--scan-pe[=yes(*)/no]
PE stands for Portable Executable - it's an executable file format used in all 32-bit versions of Windows operating systems. By
default ClamAV performs deeper analysis of executable files and attempts to decompress popular executable packers such as UPX,
Petite, and FSG.
--scan-elf[=yes(*)/no]
Executable and Linking Format is a standard format for UN*X executables. This option controls the ELF support.
--scan-ole2[=yes(*)/no]
Scan Microsoft Office documents and .msi files.
--scan-pdf[=yes(*)/no]
Scan within PDF files.
--scan-html[=yes(*)/no]
Detect, normalize/decrypt and scan HTML files and embedded scripts.
--scan-archive[=yes(*)/no]
Scan archives supported by libclamav.
--detect-broken[=yes/no(*)]
Mark broken executables as viruses (Broken.Executable).
--block-encrypted[=yes/no(*)]
Mark encrypted archives as viruses (Encrypted.Zip, Encrypted.RAR).
--max-files=#n
Extract at most #n files from each scanned file (when this is an archive, a document or another kind of container). This option pro-
tects your system against DoS attacks (default: 10000)
--max-filesize=#n
Extract and scan at most #n kilobytes from each archive. You may pass the value in megabytes in format xM or xm, where x is a num-
ber. This option protects your system against DoS attacks (default: 25 MB, max: <4 GB)
--max-scansize=#n
Extract and scan at most #n kilobytes from each scanned file. You may pass the value in megabytes in format xM or xm, where x is a
number. This option protects your system against DoS attacks (default: 100 MB, max: <4 GB)
--max-recursion=#n
Set archive recursion level limit. This option protects your system against DoS attacks (default: 16).
--max-dir-recursion=#n
Maximum depth directories are scanned at (default: 15).
EXAMPLES
(0) Scan a single file:
clamscan file
(1) Scan a current working directory:
clamscan
(2) Scan all files (and subdirectories) in /home:
clamscan -r /home
(3) Load database from a file:
clamscan -d /tmp/newclamdb -r /tmp
(4) Scan a data stream:
cat testfile | clamscan -
(5) Scan a mail spool directory:
clamscan -r /var/spool/mail
RETURN CODES
0 : No virus found.
1 : Virus(es) found.
2 : Some error(s) occured.
CREDITS
Please check the full documentation for credits.
AUTHOR
Tomasz Kojm <tkojm@clamav.net>
SEE ALSO
clamdscan(1), freshclam(1), freshclam.conf(5)
ClamAV 0.96.1 December 30, 2008 clamscan(1)