osInfo() added FQDN

lib/index.d.ts

@@ -285,6 +285,7 @@ export namespace Systeminformation {
     kernel: string;
     arch: string;
     hostname: string;
+    fqdn: string;
     codepage: string;
     logofile: string;
     serial: string;

lib/osinfo.js

@@ -17,6 +17,7 @@ const os = require('os');
 const exec = require('child_process').exec;
 const util = require('./util');
 const fs = require('fs');
+const { execSync } = require('child_process');
 
 let _platform = process.platform;
 
@@ -160,6 +161,30 @@ function getLogoFile(distro) {
   return result;
 }
 
+// --------------------------
+// FQDN
+
+function getFQDN() {
+  let fqdn = os.hostname;
+  if (_linux || _darwin || _freebsd || _openbsd || _netbsd) {
+    try {
+      const stdout = execSync('hostname -f');
+      fqdn = stdout.toString().split(os.EOL)[0];
+    } catch (e) {
+      util.noop();
+    }
+  }
+  if (_windows) {
+    try {
+      const stdout = execSync('echo %COMPUTERNAME%.%USERDNSDOMAIN%');
+      fqdn = stdout.toString().split(os.EOL)[0];
+    } catch (e) {
+      util.noop();
+    }
+  }
+  return fqdn;
+}
+
 // --------------------------
 // OS Information
 
@@ -176,6 +201,7 @@ function osInfo(callback) {
         kernel: os.release(),
         arch: os.arch(),
         hostname: os.hostname(),
+        fqdn: getFQDN(),
         codepage: '',
         logofile: '',
         serial: '',