![]() You couldĭo this with two passes or by calling tshark twice. There are few circumstances where this relevant, but I can make a contrivedĮxample: Let’s say that you want the 5th arp frame in a capture. Passes, you can specify the first and second with -R -2 -Y. If you would like to optimize display filtering over 2 bash$ tshark -G | grep -E "http\.response\."į Response line ğT_STRING http 0x0į Response Version ğT_STRING http 0x0 HTTP Response HTTP-Versionį Status Code ğT_UINT16 httpěASE_DECĐx0 HTTP Response Status Codeį Status Code Description ğT_STRING http 0x0 HTTP Response Status Code Descriptionį Response Phrase ğT_STRING http 0x0 HTTP Response Reason Phrase In this example, use http.response, and escape the periods. bash$ tshark -G | grep -E "sec_websocket_version"į Sec-WebSocket-Version c_websocket_versionğT_STRING http 0x0 If we already know what the field name is, we can get the full display filter by searching for it. Tshark -G will print all protocols, so you can use it in conjunction with grep to find fields of interest. ![]() Sometimes you know the protocol you’re looking for, just not the relevant fields you need to filter with. If you like C-style syntax, you can also use & instead of and and || instead of or. įor example, source MAC address becomes eth.src. ![]()
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