Linux

How to get netflow from a pcap file

Use nfdump suite. First transform pcap into nfcapd-format. For that: In case you have many pcap files, you can use a bash loop: Mind the extra p in nfPcapd and […]

Math

Binomial Coefficient

Complement: You can either choose a team of k members from a group of n people, or you choose all the n-k people from the group, that are NOT in

Visualization

Grafana

You can install grafana on bare metal or you use their docker image. Either way, if you want to use it with Clickhouse, you must download the according connector plugin.

Big Data Tools

Clickhouse

On Ubuntu 18.04 you can query  and it will output some info, like main pid, where is the server.log etc. How to pipe commands from file to clickhouse-client? Where is

Tools

Docker

Docker-Context Docker has a client-server architecture. When you want to write your own docker-image you can write a dockerfile (just a file named “dockerfile”, although you could give it any

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