Reorg/standardize project directories

app/lib/system.php

@@ -0,0 +1,48 @@
+<?php
+
+class System {
+  public function hostname() {
+    return shell_exec("hostname -f");
+  }
+
+  public function uptime() {
+    $uparray = explode(" ", exec("cat /proc/uptime"));
+    $seconds = round($uparray[0], 0);
+    $minutes = $seconds / 60;
+    $hours   = $minutes / 60;
+    $days    = floor($hours / 24);
+    $hours   = floor($hours   - ($days * 24));
+    $minutes = floor($minutes - ($days * 24 * 60) - ($hours * 60));
+    $uptime= '';
+    if ($days    != 0) {
+        $uptime .= $days    . ' day'    . (($days    > 1)? 's ':' ');
+    }
+    if ($hours   != 0) {
+        $uptime .= $hours   . ' hour'   . (($hours   > 1)? 's ':' ');
+    }
+    if ($minutes != 0) {
+        $uptime .= $minutes . ' minute' . (($minutes > 1)? 's ':' ');
+    }
+
+    return $uptime;
+  }
+
+  public function usedMemory() {
+    $used = shell_exec("free -m | awk '/Mem:/ { total=$2 ; used=$3 } END { print used/total*100}'");
+    return floor($used);
+  }
+
+  public function processorCount() {
+    $procs = shell_exec("nproc --all");
+    return intval($proc);
+  }
+
+  public function loadAvg1Min() {
+    $load = exec("awk '{print $1}' /proc/loadavg");
+    return floatval($load);
+  }
+
+  public function systemLoadPercentage() {
+    return floor(($this->loadAvg1Min() * 100) / $this->processorCount());
+  }
+}