Need an Introduction to Tiny Core? Or peruse Core Concepts.
tc@box:~/arduino-1.0.1$ export PATH=$PATH:/usr/local/openjdk-7/jre/bintc@box:~/arduino-1.0.1$ ./arduino
java -Dswing.defaultlaf=com.sun.java.swing.plaf.gtk.GTKLookAndFeel processing.app.Base
/usr/local/openjdk-7/jre/bin/java -Dswing.defaultlaf=com.sun.java.swing.plaf.gtk.GTKLookAndFeel processing.app.Base