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Summary:

sudo hostname NEW_NAME_HERE
sudo nano /etc/hostname # change OLD_NAME by NEW_NAME
sudo nano /etc/hosts # change OLD_NAME by NEW_NAME
sudo systemctl restart systemd-logind.service
hostnamectl set-hostname NEW_NAME_HERE
Also you should recreate your ssh keys on your machine:

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cd /opt
wget -c "http://www.apache.org/dyn/closer.cgi?filename=/activemq/5.15.7/apache-activemq-5.15.7-bin.tar.gz&action=download" -O apache-activemq-5.15.7-bin.tar.gz

tar xzf apache-activemq-5.15.7-bin.tar.gz

mv apache-activemq-5.15.7 activemq

sudo addgroup --quiet --system activemq

sudo adduser --quiet --system --ingroup activemq --no-create-home --disabled-password activemq

htaghizadeh

Git Submodules basic explanation

Why submodules?

In Git you can add a submodule to a repository. This is basically a repository embedded in your main repository. This can be very useful. A couple of advantages of using submodules:

• You can separate the code into different repositories.

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Git Submodules basic explanation

Why submodules?

In Git you can add a submodule to a repository. This is basically a repository embedded in your main repository. This can be very useful. A couple of advantages of using submodules:

• You can separate the code into different repositories.

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license: gpl-3.0
height: 960
border: no

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Importing/Indexing database (MySQL or SQL Server) in Solr using Data Import Handler

Install Solr

download and install Solr from http://lucene.apache.org/solr/.

you can access Solr admin from your browser: http://localhost:8983/solr/

use the port number used in installation.