captype man page
captype — Prints the types of capture files
capinfos <infile> ...
Captypes is a program that opens one or more capture files and prints the capture file type of each <infile>.
Capinfos is able to detect and read the same capture files that are supported by Wireshark. The input files don't need a specific filename extension; the file format and an optional gzip compression will be automatically detected. Near the beginning of the DESCRIPTION section of wireshark(1) or <https://www.wireshark.org/docs/man-pages/wireshark.html> is a detailed description of the way Wireshark handles this, which is the same way Capinfos handles this.
pcap(3), wireshark(1), mergecap(1), editcap(1), tshark(1), dumpcap(1), capinfos(1), pcap-filter(7) or tcpdump(8)
Captype is part of the Wireshark distribution. The latest version of Wireshark can be found at <https://www.wireshark.org>.
HTML versions of the Wireshark project man pages are available at: <https://www.wireshark.org/docs/man-pages>.
Original Author -------- ------ Ian Schorr <ian[AT]ianschorr.com> Contributors ------------ Gerald Combs <gerald[AT]wireshark.org> Jim Young <jyoung[AT]gsu.edu>