NAME¶

ragrep - grep argus(8) user captured data.

SYNOPSIS¶

ragrep [options] -e pattern [raoptions] [-- filter-expression]
ragrep [options] -f file [raoptions] [- filter-expression]

DESCRIPTION¶

Ragrep reads argus data from an argus-data source, greps the records based on the regexp specified on the command line, and outputs a valid argus-stream.

Ragrep works only on the fields for user captured data. Argus must be started with the configration option ARGUS_CAPTURE_DATA_LEN set to a value greater than 0, to have these data captured. See argus.conf(5) for detail.

Ragrep is based on GNU grep(1), so the regexp syntax is the same as for grep(1).

OPTIONS¶

Ragrep, like all ra based clients, supports a number of ra options including filtering of input argus records through a terminating filter expression. See ra(1) for a complete description of ra options. ragrep(1) specific options are:

-c

Suppress normal output; instead print a count of matching lines for each input file. With the -v, --invert-match option (see below), count non-matching lines.

-e <regex>

Match regular expression in flow user data fields. Prepend the regex with either "s:" or "d:" to limit the match to either the source or destination user data fields. Examples include:

   "^SSH-"           - Look for ssh connections on any port.


   "s:^GET"          - Look for HTTP GET requests in the source buffer.


   "d:^HTTP.*Unauth" - Find unauthorized http response.
    

-f FILE

Obtain patterns from FILE, one per line. The empty file contains zero patterns, and therefore matches nothing.

-i

Ignore case distinctions in both the PATTERN and the input files.

-L

Suppress normal output; instead print the name of each input file from which no output would normally have been printed. The scanning will stop on the first match.

-l

Suppress normal output; instead print the name of each input file from which output would normally have been printed. The scanning will stop on the first match.

-q

Quiet; do not write anything to standard output. Exit immediately with zero status if any match is found, even if an error was detected.

-R

Read all files under each directory, recursively; this is equivalent to the -d recurse option.

-v

Reverse the expression matching logic.

DIAGNOSTICS¶

Normally, exit status is 0 if selected records are found and 1 otherwise. But the exit status is 2 if an error occurred, unless the -q option is used and a selected line is found.

INVOCATION¶

A sample invocation of ragrep(1). This call reads argus(8) data from inputfile and greps all http transactions that generated a "404 Not Found" error.

ragrep -r inputfile -e "HTTP.*404"

SEE ALSO¶

ra(1), rarc(5), argus(8),

COPYRIGHT¶

Copyright (c) 2000-2016 QoSient. All rights reserved.

AUTHORS¶

Carter Bullard (carter@qosient.com).

BUGS¶