I would like to sum the delta time between frames which match a
    filter 
     
    In this example, CIFS traffic from a client to a server. 
     
    I can do this in the GUI: 
    Statistics, IO Graphs, Filter tcp.dstport==445, SUM tcp.time_delta,
    Style FBar, Tick interval 10 min, Unit Advanced 
      
     
    But I'm wanting to use tshark instead. 
    guru> tshark -nlr sample-cifs.pcap -R "(tcp.dstport==445)" -qz io,stat,600,"SUM
(tcp.time_delta)tcp.time_delta" 
    ===================================================================
IO Statistics
Interval: 600.000 secs
Column #0: SUM(tcp.time_delta)tcp.time_delta
                |   Column #0    
Time            |            SUM 
000.000-600.000                 0 
=================================================================== 
    Clearly, I'm fumbling something.  Suggestions? 
     
    --sk 
     
    Stuart Kendrick 
    FHCRC 
     
  
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