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JAVA_HOME variable in windows

In CMD echo %JAVA_HOME% displays Java directory, does this work the same on unix. I have tried echo $JAVA_HOME.

Solution

  • Yes it "works the same". The difference here is the way in which you're referencing envirnment variables. In linux you should use $variable notation.

    So in this case echo $JAVA_HOME shows value of JAVA_HOME environment variable, or nothing if it wasn't set.

    echo JAVA_HOME outputs just a string JAVA_HOME

    To set environment variable you should use export JAVA_HOME=something. If you'd like to have this saved between restarts you could add such line to ~/.bashrc file.