Rawshark reads a stream of packets from a file or pipe, and prints a line describing its output, followed by a set of matching fields for each packet on stdout. For more information on rawshark consult your local manual page (man rawshark) or the online version.

Help information available from rawshark. 

Rawshark (Wireshark) 3.5.0 (v3.5.0rc0-21-gce47866a4337)
Dump and analyze network traffic.
See https://www.wireshark.org for more information.

Usage: rawshark [options] ...

Input file:
  -r <infile>              set the pipe or file name to read from

Processing:
  -d <encap:linktype>|<proto:protoname>
                           packet encapsulation or protocol
  -F <field>               field to display
  -m                       virtual memory limit, in bytes
  -n                       disable all name resolution (def: all enabled)
  -N <name resolve flags>  enable specific name resolution(s): "mnNtdv"
  -p                       use the system's packet header format
                           (which may have 64-bit timestamps)
  -R <read filter>         packet filter in Wireshark display filter syntax
  -s                       skip PCAP header on input

Output:
  -l                       flush output after each packet
  -S                       format string for fields
                           (%D - name, %S - stringval, %N numval)
  -t ad|a|r|d|dd|e         output format of time stamps (def: r: rel. to first)

Miscellaneous:
  -h                       display this help and exit
  -o <name>:<value> ...    override preference setting
  -v                       display version info and exit