bpfcount(1)                                           bpfcount(1)



NAME
       bpfcount  - Generate network use stats based on BPF filter
       expressions

SYNOPSIS
       bpfcount [ -hv ] [ -i input file ] [ -o output file ] [ -r
       resolution  ] [ -w avg window size ] [ -f filter defs file
       ]

DESCRIPTION
       bpfcount generates network use statistics for various cat­
       egories  of  network traffic defined by BPF filter expres­
       sions (which are commonly used for filtering  by  sniffers
       such  as tcpdump(1)). bpfcount takes as input a saved net­
       work packet capture file (such would be generated by ’tcp­
       dump  -w  outfile’ and a series of BPF filter expressions.
       bpfcount will output a  series  of  lines  containing  the
       average number of bytes per second received by each filter
       expression.



                                                      bpfcount(1)