added support for 'ip' instead of 'ifconfig'

lib/index.js

@@ -144,7 +144,7 @@ function getStaticData(callback) {
         data.bios = res[1];
         data.baseboard = res[2];
         data.os = res[3];
-        data.versions =res[4];
+        data.versions = res[4];
         data.cpu = res[5];
         data.cpu.flags = res[6];
         data.graphics = res[7];

lib/network.js

@@ -33,6 +33,7 @@ const opts = {
 let _network = {};
 let _default_iface;
 let _mac = {};
+let isIpAvailable;
 
 function getDefaultNetworkInterface() {
 
@@ -78,13 +79,30 @@ function getMacAddresses() {
   let mac = '';
   let result = {};
   if (_linux || _freebsd || _openbsd) {
-    const cmd = 'export LC_ALL=C; /sbin/ifconfig; unset LC_ALL';
+    if (typeof isIpAvailable === 'undefined') {
+      if (fs.existsSync('/sbin/ip')) {
+        isIpAvailable = true;
+      } else {
+        isIpAvailable = false;
+      }  
+    }
+    const cmd = 'export LC_ALL=C; /sbin/' + ((isIpAvailable) ? 'ip link show up' : 'ifconfig') + '; unset LC_ALL';
     let res = execSync(cmd);
     const lines = res.toString().split('\n');
     for (let i = 0; i < lines.length; i++) {
       if (lines[i] && lines[i][0] !== ' ') {
-        iface = lines[i].split(' ')[0];
-        mac = lines[i].split('HWaddr ')[1];
+        if (isIpAvailable) {
+          let nextline = lines[i+1].trim().split(' ');
+          if (nextline[0] === 'link/ether') {
+            iface = lines[i].split(' ')[1];
+            iface = iface.slice(0, iface.length - 1);
+            mac = nextline[1];
+          }
+        } else {
+          iface = lines[i].split(' ')[0];
+          mac = lines[i].split('HWaddr ')[1];
+        }
+
         if (iface && mac) {
           result[iface] = mac.trim();
           iface = '';
@@ -92,7 +110,6 @@ function getMacAddresses() {
         }
       }
     }
-
   }
   if (_darwin) {
     const cmd = '/sbin/ifconfig';