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I am attempting to capture packets, gzip and overwritten oldest file when about to run of disk space:

tcpdump -ni eth0 -G 180 -w 'trace_%Y-%m-%d_%H:%M:%S.pcap' -z gzip

The one liner is capturing packets and zipping them but I am unable to setup a script to overwriting part.

asked 09 Sep '14, 13:04

ksudi's gravatar image

accept rate: 0%

You should look into using dumpcap i.s.o. tcpdump. It's the capture engine {wire|t}shark uses to capture network traffic and write it to disk. It has multiple capture file option (-b) which can cycle files based on time, size and number of files.

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answered 10 Sep '14, 03:50

Jaap's gravatar image

Jaap ♦
accept rate: 14%

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question asked: 09 Sep '14, 13:04

question was seen: 1,778 times

last updated: 10 Sep '14, 03:50

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