如果想研究pcapng和pcap檔案格式可以看wireshark原始碼 tcpdump預設使用的pcap https://github.com/wireshark/wireshark/blob/master/wiretap/libpcap.h wireshark預設使用的pcapng https://github.com/wireshark/wireshark/blob/master/wiretap/pcapng.h 老陳獨白: pcap檔案格式解析 http://myblog-maurice.blogspot.tw/2012/02/pcap.html 以封包數分割檔案 Linux editcap -c 1000 test.pcapng out.pcapng Windows 10 PowerShell e.g. &"C:\Program Files\Wireshark\editcap.exe" -c 1000 test.pcapng out.pcapng 合併分割的封包檔案 mergecap -w merged.pcapng source_files_* 選取特定封包內容 editcap -r capture.pcap select.pcap 1 5 10-20 30-40 選取1, 5, 10到20, 30到40號封包 pcapng轉換成pcap editcap -F libpcap .pcapng out.pcap 顯示所有封包的MD5 Linux editcap -v -D 0 capture.pcap /dev/null Windows editcap.exe -v -D 0 capture.pcap NUL Windows 10 PowerShell e.g. &"C:\Program Files\Wireshark\editcap.exe" -v -D 0 test.pcapng NUL 參考資料 wireshark文件分割與合併 https://blog.csdn.net/qq_20480611/article/details/50774686 Editcap Guid...