上一篇：Ubuntu，这样安装Eclipse：
tar -zxvf eclipse.XX.YY.tar.gz
mv eclipse.XX.YY ~/opt
sudo nano /usr/share/applications/eclipse.desktop
[Desktop Entry]
Name=Eclipse
Type=Application
Exec=/home/user/opt/eclipse/eclipse #watch the directory!
Terminal=false
Icon=/home/usr/opt/eclipse/icon.xpm
Comment=Integrated Development Environment
NoDisplay=false
Categories=Development;IDE
Name[en]=eclipse.desktop
cd /usr/local/bin
ln -s /opt/eclipse/eclipse
之后（我之前有一个工作区）运行 eclipse 会抛出一个错误来读取工作区/.metadata/.log 有人建议删除：/YOUR PATH TO WORKSPACE/.metadata/.plugins/org.eclipse.core.resources like here http://bugsanddebugs.blogspot.com/2010/06/when-eclipse-says-error-has-occurred.html 但运行 eclipse -clean 给出了同样的错误。这篇几乎详尽无遗的文章有点帮助...... http://www.eclipsezone.com/eclipse/forums/t99010.html 但仍然无法理解错误：
~/workspace$ egrep -A 2 "Caused by" ~/workspace/.metadata/.log
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.equinox.console.command.adapter.Activator.start() of bundle org.eclipse.equinox.console.
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
--
Caused by: org.osgi.framework.BundleException: Exception in org.apache.felix.gogo.command.Activator.start() of bundle org.apache.felix.gogo.command.
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
--
Caused by: java.lang.NoClassDefFoundError: org.apache.felix.gogo.command.OBR
at java.lang.Class.initializeClass(libgcj.so.12)
at org.apache.felix.gogo.command.Activator.start(Activator.java:54)
--
Caused by: java.lang.ClassNotFoundException: org.apache.felix.bundlerepository.Repository
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
--
Caused by: java.lang.ClassNotFoundException: org.apache.felix.bundlerepository.Repository
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
如何阅读这一切？