tcpdump -i INTERFACE
// Captures packets on a specific network interface
tcpdump -w FILE
// Writes captured packets to a file
tcpdump -r FILE
// Reads captured packets from a file
tcpdump -c COUNT
// Captures a specific number of packets
tcpdump -n
// Don’t resolve IP addresses
tcpdump -nn
// Don’t resolve IP addresses and don’t resolve protocol numbers
tcpdump -v
// Verbose display; verbosity can be increased with -vv and -vvv