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+ndnsec-list
+===========
+
+``ndnsec-list`` is a tool to display entities stored in **Public Information Base (PIB)**, such as
+identities, keys, and certificates.
+
+Usage
+-----
+
+::
+
+    $ ndnsec-list [-h] [-KkCc]
+
+Description
+-----------
+
+``ndnsec-list`` lists names of all the entities according to the granularity specified in options
+(The default granularity is identity). The default entities will be marked with ``*`` in front of
+their names. For example:
+
+::
+
+    $ ndnsec list
+    * /ndn/edu/ucla/cs/yingdi
+      /ndn/test/cathy
+      /ndn/test/bob
+      /ndn/test/alice
+
+
+Options
+-------
+
+``-K, -k``
+  Display key names for each identity. The key name with ``*`` in front is the default key name of
+  the corresponding identity.
+
+``-C, -c``
+  Display certificate names for each key. The certificate name with ``*`` in front is the default
+  certificate name of the corresponding key.
+
+Examples
+--------
+
+Display all the key names in PIB.
+
+::
+
+    $ ndnsec-list -k
+    * /ndn/edu/ucla/cs/yingdi
+      +->* /ndn/edu/ucla/cs/yingdi/ksk-1397247318867
+      +->  /ndn/edu/ucla/cs/yingdi/ksk-1393811874052
+
+      /ndn/test/cathy
+      +->* /ndn/test/cathy/ksk-1394129695418
+
+      /ndn/test/bob
+      +->* /ndn/test/bob/ksk-1394129695308
+
+      /ndn/test/alice
+      +->* /ndn/test/alice/ksk-1394129695025
+
+Display all the certificate names in PIB.
+
+::
+
+    $ ndnsec-list -c
+    * /ndn/edu/ucla/cs/yingdi
+      +->* /ndn/edu/ucla/cs/yingdi/ksk-1397247318867
+           +->* /ndn/edu/ucla/cs/yingdi/KEY/ksk-1397247318867/ID-CERT/%00%00%01ERn%1B%BE
+      +->  /ndn/edu/ucla/cs/yingdi/ksk-1393811874052
+           +->* /ndn/edu/ucla/cs/yingdi/KEY/ksk-1393811874052/ID-CERT/%FD%01D%85%A9a%DD
+
+      /ndn/test/cathy
+      +->* /ndn/test/cathy/ksk-1394129695418
+           +->* /ndn/test/KEY/cathy/ksk-1394129695418/ID-CERT/%FD%01D%98%9A%F3J
+
+      /ndn/test/bob
+      +->* /ndn/test/bob/ksk-1394129695308
+           +->* /ndn/test/KEY/bob/ksk-1394129695308/ID-CERT/%FD%01D%98%9A%F2%AE
+
+      /ndn/test/alice
+      +->* /ndn/test/alice/ksk-1394129695025
+           +->* /ndn/test/KEY/alice/ksk-1394129695025/ID-CERT/%FD%01D%98%9A%F2%3F