how to store the statistics of a tcpdump command to a file
the output of the tcp command is given below
/root/# tcpdump -X -nnvv -i wlan0 -c2 >filename.txt tcpdump: WARNING: wlan0: no IPv4 address assigned tcpdump: listening on wlan0, link-type IEEE802_11_RADIO (802.11 plus radiotap header), capture size 65535 bytes 13:10:22.588102 1.0 Mb/s 2412 MHz 11b -75dB signal antenna 1 0us Probe Request () [1.0 2.0 5.5 11.0 6.0 9.0 12.0 18.0 Mbit] 0x0000: 0000 0108 0204 0b16 0c12 1824 3204 3048 ...........$2.0H 0x0010: 606c 2d1a 3009 17ff ff00 0000 0000 0000 `l-.0........... 0x0020: 0000 0000 0000 0000 0000 0000 0000 .............. 13:10:22.682585 1.0 Mb/s 2412 MHz 11b -61dB signal antenna 1 336us Probe Request (mukund) [1.0* 2.0* 5.5* 11.0* Mbit] 0x0000: 0006 6d75 6b75 6e64 0104 8284 8b96 3208 ..mukund......2. 0x0010: 8c12 9824 b048 606c ...$.H`l 2 packets captured 2 packets received by filter 0 packets dropped by kernel apart from the last 3 lines, all the rest are written to the file. i want to write the last 3 lines also. so what shud i do? pls reply |
Hi omega341991,
execute command like this tcpdump -X -nnvv -i wlan0 -c2 >filename.txt 2>&1 |
thanks a lot :), rahul
it works now |
i would also like to know how to limit the duration of packet capture using tcpdump. For Eg.capturing data for 10 seconds using tcpdump
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