我想在Ubuntu 11.10上安装IDEA.首先,我安装了openjdk-7-jdk.然后我idea.sh按照指示尝试运行该文件.然而它抱怨:
ERROR: cannot start IntelliJ IDEA.
No JDK found to run IDEA. Please validate either IDEA_JDK, JDK_HOME or JAVA_HOME
environment variable points to valid JDK installation.
Press Enter to continue.
尝试echo这三个变量会在屏幕上打印一个空行.如何(以及以什么值)设置这些变量并继续安装？谢谢.