--- /dev/null
+'use strict';
+var shebangRegex = require('shebang-regex');
+
+module.exports = function (str) {
+ var match = str.match(shebangRegex);
+
+ if (!match) {
+ return null;
+ }
+
+ var arr = match[0].replace(/#! ?/, '').split(' ');
+ var bin = arr[0].split('/').pop();
+ var arg = arr[1];
+
+ return (bin === 'env' ?
+ arg :
+ bin + (arg ? ' ' + arg : '')
+ );
+};