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#Install

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer

If you see this error,

$ sudo add-apt-repository ppa:webupd8team/java
sudo: add-apt-repository: command not found

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require 'webrick'
server = WEBrick::HTTPServer.new :Port => 1234
server.mount "/", WEBrick::HTTPServlet::FileHandler, './'
trap('INT') { server.stop }
server.start

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// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

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Docker registry with basic auth and SSL certificate

Docker registry does not have authentication nor certificate mechanism so in case you have docker registry on the internet, you need something that support those in front of the registry. You can find examples using Nginx for it on the web and this is yet another one.

The architecture

Client talks to Nginx. Nginx proxies the request to the docker registry. The nginx is on the host OS - not as a container.

+-----------+     +--------------------------------------------------------+
|           |     |  Server                              Docker container  |

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How to use logrotate

1. logrotate is triggerd by cron /etc/cron.daily/logrotate
2. Create a log rotation conf file in /etc/logrotate.d. All the files in this directory is included in /etc/logrotate.conf
3. Let's add /etc/logrotate.d/collector for example. The contents is as follows:

/var/log/collector/log/*.log {
	daily
	missingok
	rotate 52

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Matching space with grep

grep "^\s\s\s\s\"url\":\s\"http" */*/*/analysis/json/analysis.json

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Nerdtree in docker container

Symptom

• In the tree view of nerdtree, you see ?~V? instead of arrow shape.

Possible reason

1. vim is not installed but vi
2. The locale setting is wrong

Solutions

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Create a new branch

nac:gtip_docs inoue$ git branch
* master
nac:gtip_docs inoue$ git checkout -b goo
Switched to a new branch 'goo'
nac:gtip_docs inoue$ git branch
* goo
 master

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#Using nfdump nfdump is a light-weight and simple netflow collector.

#Receive netflow

nfcapd -w -D -l /flows -p 2055

#Show basic stats

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#Sample:

superuser ALL=(ALL) NOPASSWD:ALL