量角器 - 在Ubuntu 14.04上启动时出错

Question

I'm trying to set up Protractor on Ubuntu 14.04 LTS and I'm getting the following error on this command:

> sudo webdriver-manager start

The error is:

seleniumProcess.pid: 52352

events.js:72
    throw er; // Unhandled 'error' event
          ^
Error: spawn ENOENT
at errnoException (child_process.js:1001:11)
at Process.ChildProcess._handle.onexit (child_process.js:792:34)

Results of webdriver-manager status :

selenium standalone is up to date
chromedriver is up to date
IEDriver is not present

JDK looks to be installed already ( java --version ):

The program 'java' can be found in the following packages:
 * default-jre
 * gcj-4.8-jre-headless
 * openjdk-7-jre-headless
 * gcj-4.6-jre-headless
 * openjdk-6-jre-headless
Try: sudo apt-get install <selected package>

Any ideas?

Answer 1

Ensure java is installed:

sudo apt-get install openjdk-7-jre-headless

Dealing with webdriver-manager doesn't require sudo:

webdriver-manager start