Update: An updated version of these instructions for Ubuntu 12.10 (Quantal Quetzal) is available here.

1. Install the prerequisites

sudo apt-get install openjdk-7-jdk libjpeg62 libwebkitgtk-1.0-0 git-core

Although Aptana Studio doesn’t officially support OpenJDK, I’ve not encountered any problems, however I’ve not done extensive testing. Alternatively, to use the Sun JDK, do the following:

sudo apt-get install libjpeg62 libwebkitgtk-1.0-0 git-coresudo add-apt-repository ppa:webupd8team/javasudo apt-get updatesudo apt-get install oracle-java7-installer#[source][2]

libjpeg62 is important, without it you will get errors like this:

An internal error has occurred.No more handlesNative code library failed to load. (java.lang.UnsatisfiedLinkError: /opt/Aptana_Studio_3/plugins/com.aptana.swt.webkitbrowser.linux.x86_64_1.0.0.1295409059/os/linux/x86_64/libcefjni.so: libjpeg.so.62: cannot open shared object file: No such file or directory)

2. Download Aptana Studio

You can download Aptana Studio 3 here. Select the “Standalone Version” if not selected and click download.

3. Extract Aptana Studio**

sudo unzip [name of Aptana Studio ZIP file here].zip -d /opt

4. Add the menu shortcut

wget http://www.samclarke.com/wp-content/uploads/2012/04/AptanaStudio3.desktopsudo mv AptanaStudio3.desktop /usr/share/applications/AptanaStudio3.desktop

For those of you which are security conscious, you can check the contents of AptanaStudio3.desktop here or by entering the URL above.

-- source to network.

Ruby on Rails Session 2: How to install Aptana Studio 3 on Ubuntu 12.04 LTS