When running a Job with:
Provide Node & npm bin/ folder to PATH: Checked

Execute shell containing any npm, node or other command related. Seems to have failed.

Used automatic installation with NodeJS 4.3.2
17:01:48 /tmp/hudson7944192678671729821.sh: line 2: npm: command not found

Steps to Reproduce:
Install NodeJS

1. Click on Manage Jenkins from the Dashboard
2. Click on Global Tool Configuration
3. Click NodeJS installations...
4. Click Add NodeJS
5. Name: 4.3.2
6. Check: Install Automatically
7. Installation: NodeJs 4.3.2
8. Global Installation: mocha chai serverless
9. Global npm packages refresh hours: 72
10. Click Save

Validate installation

$JENKINS_HOME/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/4.3.2

should exist

Create and Run Job

1. Create a freestyle job
2. Check box for:Provide Node & npm bin/ folder to PATH
3. Execute Shell Containing: echo $PATH; npm --version