Re: Monitor progress and ETA while running snort

["Carter Waxman \(cwaxman\) via Snort-users" <snort-users () lists snort org>]

kill –USR1 (snort pid) and snort will dump stats to stdout. See “Packet I/O Totals” for packets read so far.
--pcap-list will run a batch of pcaps, but be aware that Snort resets between each pcap so you would probably still 
need to do your merge.

From: Snort-users <snort-users-bounces () lists snort org> on behalf of Assaf via Snort-users <snort-users () lists 
snort org>
Reply-To: Assaf <assaf.morami () gmail com>
Date: Thursday, October 11, 2018 at 12:56 AM
To: "snort-users () lists snort org" <snort-users () lists snort org>
Subject: [Snort-users] Monitor progress and ETA while running snort

Hi, I just wanted to share how I monitor progress and ETA while running snort from a pcap file.

If I have only one pcap I use pipe viewer (the pv command) like this:

pv x.pcap | snort -r -

If I have more than one pcap, e.g. from a big tcpdump run, I merge all of them on the fly using joincap ( 
https://github.com/assafmo/joincap ) like this:

joincap *.pcap | pv -s $(du -bc *.pcap | awk '/total/{print $1}') | snort -r -

This way pv print progress and ETA information while snort is running. :-)

Shameless plug - I wrote joincap specifically for these kind of situations, because mergecap and tcpslice does not 
handle errors very well.

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