Archive for category ubuntu

Windows and ubuntu Synergy

I have just installed Synergy on my Gutsy Ubuntu machine. This allows me to switch seamlessly between my ubuntu desktop and my windows laptop using the same keyboard and mouse. It was very easy to install, via apt. I followed the ubuntu synergy how to and it worked perfectly first time.

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How to install Java on ubuntu

I am writing this post because I keep forgetting how to do it and end up trawling the web trying to find it. The Unbuntu starter guide should be the first port of call to install whatever flavour of java you want via apt.

Then this comes from [1]

If you want to use Sun’s Java instead of the open source GIJ (GNU Java bytecode interpreter) you need to set it as default. To list installed JVMs:

update-java-alternatives -l

To select, for example, Sun’s JVM as provided in Ubuntu 6.06, run:

sudo update-java-alternatives -s java-1.5.0-sun

You should also edit /etc/jvm and move /usr/lib/jvm/java-1.5.0-sun to the top of JVMs offered.

To set the JAVA_HOME environment variable I followed this [2]

export JAVA_HOME=/usr/lib/jvm/java-1.5.0-sun-1.5.0.08

You can find your JAVA_HOME using the locate command for a file belonging to the JDK.

locate /rt.jar

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