The editor can be downloaded from the RPG Next Gen site.
The content of the ZIP archive needs just to be extracted at the desired location for the application. The extraction is the whole installation process. There needs nothing more to be done.
RPG Next Gen Editor can also be installed with the p2 director application. This will install the editor directly from the update repository. Information about p2 director can be found at help.eclipse.org.
You can use most Eclipse installations as the p2 director is a bundle of Eclipse.
Example:
./eclipse -application org.eclipse.equinox.p2.director -nosplash -repository http://rpgnextgen.sourceforge.net/update -profile RPGNGProfile -profileProperties org.eclipse.update.install.features=true -roaming -installIU de.rpgng.product -destination /tmp/rpgng -bundlepool /tmp/rpgng -p2.os linux -p2.ws gtk -p2.arch x86
It is useful to place the workspace in a different location than the editor itself. You can specifiy the location of the workspace with a parameter (data) to the editor:
rpgng -data /home/fist/rpgng-workspace
You can have different version of the editor on the computer without a problem. Just extract the different versions of the editor into separate folders. A symbolic link can be used to link to the current version of the editor.
Make a link to the local bin folder
ln -s /your/installation/folder/rpgng /usr/local/bin/rpgng
Now your starter from the menu bar (for example) can point to the link in /usr/local/bin/ .