Node.js GraphicsMagic: check installation and functionality

Question

I am working with the Node.js gm ( Github ) module for GraphicsMagic ( Link ).

How to determine if gm installed gm software for gm module is installed and fully functional node.js on the current computer or not? (I want to check this on the process of initializing my server)

Answer 1

You can call the command line tool and check the output.

 var exec = require('child_process').exec; exec("gm", function (error, stdout, stderr) { // Validate the output with one of the parameters. });