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A Journey of a Thousand Miles Begins with a Single Step

Perform Health-Check on Database Connections with logstash

This section describes how to perform health checks on database instances. logstash offers the jdbc input plugin.

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Convert multiple fields with mutate plugin for logstash

The mutate plugin allows to convert fields into other data types. The existing example does not illustrate how to convert multiple fields.

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Validate Apache Maven SCM settings

To perform a release of your Maven Artifact, the pom.xml needs a SCM section. To validate or check if the SCM settings are correct, you can use the Maven goal:

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Setup SCR3311 for GnuPG on Linux

I have never documented how I setup above card reader for GnuPG smart cards. This article will fill the gap. I use my new setup elementary (Ubuntu/Debian) desktop as virtualization with VirtualBox.

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IntelliJ Regular Expression editor support

IntelliJ has the capability to use regular expressions to find and replace text source. This powerful feature simplifies your life.

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Emoji cheat sheet

Emoji are the ideograms or smileys used in Japanese electronic messages and Web pages, the use of which is spreading outside Japan. Originally meaning pictograph, the word emoji literally means “picture” (e) + “character” (moji). Using github, dokuwiki, there are available for content editing. Some of the emoji codes are not super easy to remember, so here is a little cheat sheet.

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Add JDBC driver to your classpath

If CLASSPATH exists; the driver is appended. For Windows:

SET ORACLE_JAR=C:\Data\lib\db\ojdbc6-11g.jar
SET CLASSPATH="%CLASSPATH%;%ORACLE_JAR%"
ECHO %CLASSPATH%
"C:\Data\lib\db\ojdbc6-11g.jar"

For Linux:

export ORACLE_JAR=/opt/lib/db/ojdbc6-11g.jar
export CLASSPATH="$ORACLE_JAR:$CLASSPATH"
# check setting
echo $CLASSPATH

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List usb devices in VirtualBox

If you want to test which USB ports and devices is capable of, you can use the VBoxManage command.

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CDI definition hell

As I had to give a training about Contexts and Dependency Injection for the Java EE Platform (CDI), I made a small graphic with Lucidchart about CDI.

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