Ignore OS-specific files in other operating systems. Fixes #4460

package.json

@@ -179,6 +179,7 @@
     "makelogs": "3.0.0-beta3",
     "marked-text-renderer": "0.1.0",
     "mocha": "2.3.0",
+    "ncp": "2.0.0",
     "nock": "2.10.0",
     "npm": "2.11.0",
     "portscanner": "1.0.0",

tasks/build/index.js

@@ -22,6 +22,7 @@ module.exports = function (grunt) {
       'stop:optimizeBuild',
       '_build:downloadNodeBuilds:finish',
       '_build:versionedLinks',
+      '_build:osShellScripts',
       '_build:archives',
       grunt.option('os-packages') ? [
         '_build:pleaseRun',

tasks/build/os_shell_scripts.js

@@ -0,0 +1,42 @@
+import {unlink} from 'fs';
+import {join, extname} from 'path';
+import {promisify} from 'bluebird';
+import {ncp} from 'ncp';
+const pncp = promisify(ncp);
+const punlink = promisify(unlink);
+
+export default function (grunt) {
+  grunt.registerTask('_build:osShellScripts', async function osShellScripts() {
+    const done = this.async();
+    const source = 'build/kibana/bin';
+    const platforms = grunt.config.get('platforms');
+    const allPlatforms = fn => invokeAllAsync(platforms, fn);
+
+    try {
+      await allPlatforms(platform => punlink(join(platform.buildDir, 'bin')));
+      await allPlatforms(platform => pncp(source, join(platform.buildDir, 'bin')));
+      await allPlatforms(platform => removeExtraneousShellScripts(grunt, platform));
+      done();
+    } catch (err) {
+      done(err);
+    }
+  });
+};
+
+function invokeAllAsync(all, fn) {
+  return Promise.all(all.map(fn));
+}
+
+function removeExtraneousShellScripts(grunt, platform) {
+  return Promise.all(grunt.file
+    .expand(join(platform.buildDir, 'bin', '*'))
+    .filter(file => isExtraneous(platform, file))
+    .map(file => punlink(file)));
+}
+
+function isExtraneous(platform, file) {
+  const ext = extname(file);
+  if (platform.win && ext === '') { return true; }
+  if (!platform.win && ext === '.bat') { return true; }
+  return false;
+}