Create the application directory structure:
<code>
sudo mkdir -p /opt/atlassian/confluence/
sudo mkdir /opt/atlassian/confluence/confluence-home-docs
sudo mkdir /opt/atlassian/confluence/confluence-home-help
</code>

Download and extract the Confluence application:
<code>
wget https://www.atlassian.com/software/confluence/downloads/binary/atlassian-confluence-5.7.5-x64.bin
wget https://www.atlassian.com/software/confluence/downloads/binary/atlassian-confluence-5.7.5.tar.gz
tar -xzvf atlassian-confluence-5.7.5.tar.gz
sudo mv atlassian-confluence-5.7.5 /opt/atlassian/confluence/
</code>

Add the Confluence user to run the instance:
<code>
sudo adduser confluence
</code>

Give the Confluence user permissions to the application directories:
<code>
sudo chown -R confluence:confluence /opt/atlassian/confluence/confluence-home-docs
sudo chown -R confluence:confluence /opt/atlassian/confluence/confluence-home-help
sudo chmod -R 775 /opt/atlassian/confluence/confluence-home-docs
sudo chmod -R 775 /opt/atlassian/confluence/confluence-home-help
</code>

Install the Java Runtime Environment (Java JRE):
<code>
sudo apt-get install default-jre
</code>

Edit ''confluence-init.properties''; specify ''confluence.home'' as specified below:
<code>
sudo vi /opt/atlassian/confluence/atlassian-confluence-5.7.5/confluence/WEB-INF/classes/confluence-init.properties
</code>

Set the ''confluence.home'' attribute:
<code>
confluence.home=/opt/atlassian/confluence/confluence-home-docs
</code>

Start Confluence:
<code>
sudo /opt/atlassian/confluence/atlassian-confluence-5.7.5/bin/start-confluence.sh
</code>