diff --git a/lib/adapter/cmd.py b/lib/adapter/cmd.py
index 9e06974..5e5b489 100644
--- a/lib/adapter/cmd.py
+++ b/lib/adapter/cmd.py
@@ -8,6 +8,22 @@ from gevent.subprocess import Popen, PIPE
 
 from .adapter import Adapter
 
+import os.path
+import re
+
+def _get_abspath(path):
+    """Find absolute path of the specified `path`
+    according to its
+    """
+
+    if path.startswith("/"):
+        return path
+
+    import __main__
+    return os.path.join(
+        os.path.dirname(os.path.dirname(__main__.__file__)),
+        path)
+
 class CommandAdapter(Adapter):
     """
     """
@@ -20,8 +36,11 @@ class CommandAdapter(Adapter):
     def _get_page(self, topic, request_options=None):
         cmd = self._get_command(topic, request_options=request_options)
         if cmd:
-            proc = Popen(cmd, stdout=PIPE, stderr=PIPE)
-            answer = proc.communicate()[0].decode('utf-8')
+            try:
+                proc = Popen(cmd, stdout=PIPE, stderr=PIPE)
+                answer = proc.communicate()[0].decode('utf-8')
+            except OSError:
+                return "ERROR of the \"%s\" adapter: please create an issue" % self._adapter_name
             return answer
         return ""
 
@@ -64,3 +83,34 @@ class Translation(CommandAdapter):
 
         return ["/home/igor/cheat.sh/bin/get_translation",
                 from_, to_, topic.replace('+', ' ')]
+
+
+class AdapterRfc(CommandAdapter):
+    """
+    Show RFC by its number.
+    Exported as: "/rfc/NUMBER"
+    """
+
+    _adapter_name = "rfc"
+    _output_format = "text"
+    _cache_needed = True
+    _command = ["share/adapters/rfc.sh"]
+
+    def _get_command(self, topic, request_options=None):
+        cmd = self._command[:]
+        if not cmd[0].startswith("/"):
+            cmd[0] = _get_abspath(cmd[0])
+
+        # cut rfc/ off
+        if topic.startswith("rfc/"):
+            topic = topic[4:]
+
+        return cmd + [topic]
+
+    def _get_list(self, prefix=None):
+        return list("rfc/%s" % x for x in range(1, 8649))
+
+    def is_found(self, topic):
+        if re.match("rfc/[0-9]+$", topic):
+            return True
+        return False
diff --git a/lib/config.py b/lib/config.py
index af40e4c..9bd91f3 100644
--- a/lib/config.py
+++ b/lib/config.py
@@ -84,6 +84,7 @@ _CONFIG = {
         "cheat.sheets",
         "cheat.sheets dir",
         "learnxiny",
+        "rfc",
         ],
     "adapters.mandatory": [
         "search",
@@ -112,6 +113,7 @@ _CONFIG = {
     "routing.pre": [
         ("^$", "search"),
         ("^[^/]*/rosetta(/|$)", "rosetta"),
+        ("^rfc/", "rfc"),
         ("^:", "internal"),
         ("/:list$", "internal"),
         ("/$", "cheat.sheets dir"),