How to get all the mac address from captured package?
 

tcpdump -i any -w all.cap
Now how to get get all the mac address from captured package?
Same mac address as one address.

The -e option in "tcpdump" will print the link-level header when reading the pcap file.

You'll want to familiarize yourself with the manual page for "tcpdump" or else read the pcap file in with wireshark. If you do the latter, just be sure to run wireshark as a normal user and not root.