The Tutorial shows you How to Install and Getting-Started with the Latest Eclipse 2023-03 R IDE C/C++ for Linux OS4 OpenDesktop 13 32-bit Desktop.
There is the Possibility also to Install the Eclipse Platform via apt-get But the Ubuntu Linux Precise apt Repositories from which OS4 OpenDesktop 13 Depends are still Back to Eclipse 3.7 Indigo.
So at the Moment if you want Install the Latest Eclipse 2023-03 R Build on Linux OS4 OpenDesktop 13 you will Need to Download and Install Eclipse 2023-03 R C/C++ Development Release for Linux.
Hence, here we Proceed Directly to Download and Installation of the Whole Eclipse for C/C++ Development Linux Release.
The Content give Focus Only to the Essentials Instructions and Commands to make it Easier to Follow.
To the Guide Bottom you find a Link to Create a Launcher and Hello-World Application Quick Starting.

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Download Eclipse C/C++ Oxygen R IDE:
Eclipse 2023-03 R IDE C/C++ Linux 32bit -
Double-Click on Archive to Extract Eclipse into /tmp
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Open Terminal Window
(Press “Enter” to Execute Commands) -
Relocating Eclipse.
sudo chown -R root:root /tmp/eclipse && mv /tmp/eclipse /opt/
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Starting Eclipse from Terminal.
Making a Symlink
ln -s /opt/eclipse/eclipse /usr/local/bin/eclipse
After you can Start Eclipse from Terminal simply with:
eclipse
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Create an Eclipse Launcher for Quick Starting:
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Eclipse C++ Getting-Started SetUp & Hello-World: