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I want to install an NPM express generator:

sudo apt npm install -g express-generator

It throws the following error:

Unable to locate an executable at "/Library/Java/JavaVirtualMachines/openjdk-14.0.1.jdk/Contents/Home/bin/apt" (-1)

I installed Java in this path (it's not in the System/Library/ - maybe thats the issue?):

'MacintoshSSD/Library/Java/JavaVirtualMachines/openjdk-14.0.1.jdk/Contents/Home'

My .bash_profile looks like that:

export JAVA_HOME=$(/usr/libexec/java_home)

If I check JAVA_HOME it looks fine:

echo $JAVA_HOME /Library/Java/JavaVirtualMachines/openjdk-14.0.1.jdk/Contents/Home

.. and Java version:

java --version openjdk 14.0.1 2020-04-14 OpenJDK Runtime Environment (build 14.0.1+7) OpenJDK 64-Bit Server VM (build 14.0.1+7, mixed mode, sharing)

Any idea why it still can find an exectuable?

I an other thread I read about a possible conflict between the pre-installed macOS Java-Version and the Orcalce Java-Version enter link description here but I couldn`t work it out..

And could you explain to me the difference between java_home and JAVA_HOME?

Dawienchi
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1 Answers1

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Sorry, I just saw what's wrong...

There used to be an apt tool in Java, but it's gone now. Your mistake is using the linux command line. On many linux systems, another tool called apt is used for installing software.

Check the npm documentation on how to install npm on your Mac, as there are different ways to do it.

Once npm is installed, run sudo npm install -g express-generator (no apt here).

  • Explanation of the error message

    The Java apt-tool was removed in JDK 8. But as JAVA_HOME/bin is normally not on your PATH on Mac, apple provides simple wrappers for all the commands under JAVA_HOME. There still is such a wrapper for apt that tries to run a program with the same name from your Java installation. That's why you get that error message.

  • conflict between the pre-installed macOS Java-Version and the Orcalce Java-Version:

    Apple stopped pre-installing Java in macOS 10.7 so this should not be an issue.

  • difference between java_home and JAVA_HOME:

    JAVA_HOME is an environment variable that points to your Java installation. java_home is a utility program in macOS that makes it easier to correctly set up your JAVA_HOME by listing installed Java versions and the values to use for JAVA_HOME.

Axel
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