init needs to adapt to linux users having various open commands

commands/init.js

@@ -65,8 +65,10 @@ export const main = async (opts) => {
 
   if(process.platform === "win32") {
     exec(`start ${url}`);
-  } else {
+  } else if(process.platform === "darwin") {
     exec(`open ${url}`);
+  } else {
+    warn(`\nOn linux you just open the link yourself:\n${url}\n`);
   }
 
   question("Register your admin user and hit ENTER.");