I'm on ubuntu linux. I've installed java 1.5 but at the command line, when I type java -verion I get 1.4. So then I type: export PATH="/usr/lib/jdk1.5.0_06/bin/:$PATH". I type java -version and get 1.5, but then when i close the command prompt and open a new one, it's back to java 1.4. Any help on what i need to do to make it permanent?