树莓派3升级Node.js遇问题：执行指定步骤后存异常

Hey there, let's figure out why your Node.js install on Raspberry Pi shows success messages but isn't working as expected. Here are some targeted troubleshooting steps to resolve this:

First, Verify the Installed Version #

Start by checking what version of Node.js and npm your system is actually recognizing—this will tell us if the new install is being picked up:

node -v
npm -v

If the output doesn't show v9.11.1, your system might still be using an old version, or the new install didn't complete properly under the hood.

1. Purge Old Node.js Residues #

Old, conflicting Node.js packages often cause this "success but broken" scenario. Let's fully remove any existing installations first:

sudo apt-get purge -y nodejs npm
sudo apt-get autoremove -y --purge
sudo rm -rf /usr/local/bin/node /usr/local/bin/npm /usr/local/lib/node_modules

After cleaning up, re-run your original installation commands:

curl -sL https://deb.nodesource.com/setup_9.x | sudo -E bash -
sudo apt-get install -y nodejs

2. Check Your PATH Environment Variable #

Sometimes the system doesn't prioritize the newly installed Node.js executable. Check if the nodesource install path (/usr/bin) is in your PATH:

echo $PATH

If /usr/bin isn't listed, temporarily add it with:

export PATH=/usr/bin:$PATH

To make this change permanent, edit your ~/.bashrc file, add the line above, then run source ~/.bashrc to apply it immediately.

3. Validate Installation Integrity #

Check if all required files from the nodejs package were installed correctly:

dpkg -L nodejs | grep -E "(node|npm)"

You should see entries like /usr/bin/node and /usr/bin/npm. If any are missing, reinstall the package with the --reinstall flag:

sudo apt-get install --reinstall -y nodejs

4. Test Core Node.js Functionality #

Create a simple test script to rule out project-specific issues:
Create a file named test.js with this content:

console.log("Running Node.js version:", process.version);

Run it with:

node test.js

If this outputs the correct version (v9.11.1), Node.js itself is working, and you'll need to look into your project's dependencies or configuration for the issue.

内容的提问来源于stack exchange，提问作者Grandika