p> PATH 真的是重要的部分。但是，如果指定绝对路径，则可以跳过它。尝试这样的东西：

  / path / to / phantomjs render_image.js 
 / pre> 

 ...但是可以累了。要快速将其添加到 PATH 中，从 phantomjs 可执行文件的目录中，将其符号链接到 / usr / local / bin ：
  sudo ln -s / path /到/ phantomjs / usr / local / bin / 
 
  / usr / local / bin 可能在您的 PATH 。
 
I followed these instructions (except for copying the executable to my PATH because I cannot seem to find it and it does not seem necessary). Then I made a file called image_render.js in my public javascripts directory with 
console.log('Hello, world!');
phantom.exit();
inside it, saved it, and ran phantomjs render_image.js in my terminal. However, my terminal does not recognize the command:
-bash: phantomjs: command not found
What have I done wrong?
The PATH really is the important part. You can skip it, however, if you specify the absolute path. Try something like this:
/path/to/phantomjs render_image.js
...but that can get tiring. For a quick way to add it to your PATH, from the directory of the phantomjs executable, symbolically link it into /usr/local/bin:
sudo ln -s /path/to/phantomjs /usr/local/bin/
/usr/local/bin is likely on your PATH.