Tool 19: Extract a range of packets from a record
  
  Description:
   
  A record is a capture file. It contains several packets captured
  during a sniff. It can also be created by hand. There are 7 formats
  for records: pcap (tcpdump compatible), bin (binary, unreadable by
  humans but fast) and mixed/mixed_wrap/dump/hexa/hexa_wrap (easy to
  read and edit). A record also has an associated DLT (Data Link Type),
  indicating at which level a packet start: raw (start at IP header) and
  ether (start at Ethernet header) are the 2 most common DLT. Tool 13
  displays DLT of each device.
  
  This tool extracts a range of packets from one record, and save them
  in another record. For example, it can extract packet number 2 to
  number 5.
  
  Parameter --src-file indicates the input record filename.
  Parameter --dst-file indicates the output record filename.
  Parameter --recordencode defines how to encode data in this record
  (suggested values: bin, pcap and mixed_wrap).
   
  Synonyms:
    capture
  Usage:
    netwox 19 -f file -F file [-r recordencode] [-s uint32] [-e uint32]
  Parameters:
 
  | parameter | description | example | 
 | -f|--src-file file | input record file | srcfile.txt | 
| -F|--dst-file file | output record file | dstfile.txt | 
| -r|--recordencode recordencode | encoding type for output record | bin | 
| -s|--start uint32 | start packet (from 1) | 0 | 
| -e|--end uint32 | end packet (0=nolimit) | 0 | 
  Examples:
    netwox 19 -f "srcfile.txt" -F "dstfile.txt"
    netwox 19 --src-file "srcfile.txt" --dst-file "dstfile.txt"