diff --git a/CHANGELOG.md b/CHANGELOG.md
index c2bf333..042886c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -30,6 +30,7 @@ For major (breaking) changes - version 3 and 2 see end of page.
 
 | Version        | Date           | Comment  |
 | -------------- | -------------- | -------- |
+| 4.19.4         | 2020-01-24     | `mem()` prevent log messages, `memgetDefaultNetworkInterface()` catch errors |
 | 4.19.3         | 2020-01-24     | `memLayout()` bank info fix macOS |
 | 4.19.2         | 2020-01-19     | `cpu()` muli-processor fix windows |
 | 4.19.1         | 2020-01-14     | `osInfo()` uefi fix windows |
diff --git a/docs/history.html b/docs/history.html
index 27ec030..1028130 100644
--- a/docs/history.html
+++ b/docs/history.html
@@ -83,6 +83,11 @@
                   </tr>
                 </thead>
                 <tbody>
+                  <tr>
+                    <th scope="row">4.19.4</th>
+                    <td>2020-01-24</td>
+                    <td><span class="code">mem()</span> prevent log messages</td>
+                  </tr>
                   <tr>
                     <th scope="row">4.19.3</th>
                     <td>2020-01-24</td>
diff --git a/docs/index.html b/docs/index.html
index 591024f..29de977 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -168,7 +168,7 @@
       <img class="logo" src="assets/logo.png">
       <div class="title">systeminformation</div>
       <div class="subtitle"><span id="typed"></span></div>
-      <div class="version">Current Version: <span id="version">4.19.3</span></div>
+      <div class="version">Current Version: <span id="version">4.19.4</span></div>
       <button class="btn btn-light" onclick="location.href='https://github.com/sebhildebrandt/systeminformation'">View on Github <i class=" fab fa-github"></i></button>
     </div>
     <div class="down">
diff --git a/lib/memory.js b/lib/memory.js
index fe99a5a..bfe9632 100644
--- a/lib/memory.js
+++ b/lib/memory.js
@@ -142,7 +142,7 @@ function mem(callback) {
       };
 
       if (_linux) {
-        exec('export LC_ALL=C; cat /proc/meminfo ; unset LC_ALL', function (error, stdout) {
+        exec('export LC_ALL=C; cat /proc/meminfo 2>/dev/null ; unset LC_ALL', function (error, stdout) {
           if (!error) {
             const lines = stdout.toString().split('\n');
             result.total = parseInt(util.getValue(lines, 'memtotal'), 10);
@@ -174,7 +174,7 @@ function mem(callback) {
         });
       }
       if (_freebsd || _openbsd || _netbsd) {
-        exec('/sbin/sysctl -a | grep -E "hw.realmem|hw.physmem|vm.stats.vm.v_page_count|vm.stats.vm.v_wire_count|vm.stats.vm.v_active_count|vm.stats.vm.v_inactive_count|vm.stats.vm.v_cache_count|vm.stats.vm.v_free_count|vm.stats.vm.v_page_size"', function (error, stdout) {
+        exec('/sbin/sysctl -a 2>/dev/null | grep -E "hw.realmem|hw.physmem|vm.stats.vm.v_page_count|vm.stats.vm.v_wire_count|vm.stats.vm.v_active_count|vm.stats.vm.v_inactive_count|vm.stats.vm.v_cache_count|vm.stats.vm.v_free_count|vm.stats.vm.v_page_size"', function (error, stdout) {
           if (!error) {
             let lines = stdout.toString().split('\n');
             const pagesize = parseInt(util.getValue(lines, 'vm.stats.vm.v_page_size'), 10);
@@ -202,7 +202,7 @@ function mem(callback) {
         resolve(result);
       }
       if (_darwin) {
-        exec('vm_stat | grep "Pages active"', function (error, stdout) {
+        exec('vm_stat 2>/dev/null | grep "Pages active"', function (error, stdout) {
           if (!error) {
             let lines = stdout.toString().split('\n');
 
@@ -210,7 +210,7 @@ function mem(callback) {
             result.buffcache = result.used - result.active;
             result.available = result.free + result.buffcache;
           }
-          exec('sysctl -n vm.swapusage', function (error, stdout) {
+          exec('sysctl -n vm.swapusage 2>/dev/null', function (error, stdout) {
             if (!error) {
               let lines = stdout.toString().split('\n');
               if (lines.length > 0) {
diff --git a/lib/network.js b/lib/network.js
index fe9bf3b..f25556f 100644
--- a/lib/network.js
+++ b/lib/network.js
@@ -61,45 +61,48 @@ function getDefaultNetworkInterface() {
   }
   ifacename = ifacename || ifacenameFirst || '';
 
-  if (_windows) {
-    // https://www.inetdaemon.com/tutorials/internet/ip/routing/default_route.shtml
-    const cmd = 'netstat -r';
-    const result = execSync(cmd);
-    const lines = result.toString().split(os.EOL);
-    let defaultIp = '';
-    lines.forEach(line => {
-      line = line.replace(/\s+/g, ' ').trim();
-      if (line.indexOf('0.0.0.0 0.0.0.0') > -1 && !(/[a-zA-Z]/.test(line))) {
-        const parts = line.split(' ');
-        if (parts.length >= 5) {
-          defaultIp = parts[parts.length - 2];
+  try {
+    if (_windows) {
+      // https://www.inetdaemon.com/tutorials/internet/ip/routing/default_route.shtml
+      const cmd = 'netstat -r';
+      const result = execSync(cmd);
+      const lines = result.toString().split(os.EOL);
+      let defaultIp = '';
+      lines.forEach(line => {
+        line = line.replace(/\s+/g, ' ').trim();
+        if (line.indexOf('0.0.0.0 0.0.0.0') > -1 && !(/[a-zA-Z]/.test(line))) {
+          const parts = line.split(' ');
+          if (parts.length >= 5) {
+            defaultIp = parts[parts.length - 2];
+          }
         }
-      }
-    });
-    if (defaultIp) {
-      for (let dev in ifaces) {
-        if ({}.hasOwnProperty.call(ifaces, dev)) {
-          ifaces[dev].forEach(function (details) {
-            if (details && details.address && details.address === defaultIp) {
-              ifacename = dev;
-            }
-          });
+      });
+      if (defaultIp) {
+        for (let dev in ifaces) {
+          if ({}.hasOwnProperty.call(ifaces, dev)) {
+            ifaces[dev].forEach(function (details) {
+              if (details && details.address && details.address === defaultIp) {
+                ifacename = dev;
+              }
+            });
+          }
         }
       }
     }
-  }
-  if (_linux || _darwin || _freebsd || _openbsd || _netbsd || _sunos) {
-    let cmd = '';
-    if (_linux) cmd = 'ip route 2> /dev/null | grep default | awk \'{print $5}\'';
-    if (_darwin) cmd = 'route get 0.0.0.0 2>/dev/null | grep interface: | awk \'{print $2}\'';
-    if (_freebsd || _openbsd || _netbsd || _sunos) cmd = 'route get 0.0.0.0 | grep interface:';
-    let result = execSync(cmd);
-    ifacename = result.toString().split('\n')[0];
-    if (ifacename.indexOf(':') > -1) {
-      ifacename = ifacename.split(':')[1].trim();
+    if (_linux || _darwin || _freebsd || _openbsd || _netbsd || _sunos) {
+      let cmd = '';
+      if (_linux) cmd = 'ip route 2> /dev/null | grep default | awk \'{print $5}\'';
+      if (_darwin) cmd = 'route get 0.0.0.0 2>/dev/null | grep interface: | awk \'{print $2}\'';
+      if (_freebsd || _openbsd || _netbsd || _sunos) cmd = 'route get 0.0.0.0 | grep interface:';
+      let result = execSync(cmd);
+      ifacename = result.toString().split('\n')[0];
+      if (ifacename.indexOf(':') > -1) {
+        ifacename = ifacename.split(':')[1].trim();
+      }
     }
+  } catch (e) {
+    util.noop();
   }
-
   if (ifacename) _default_iface = ifacename;
   return _default_iface;
 }