diff --git a/cmd/ledis-cli/const.go b/cmd/ledis-cli/const.go
index 9c8886b..b5265d6 100644
--- a/cmd/ledis-cli/const.go
+++ b/cmd/ledis-cli/const.go
@@ -1,4 +1,4 @@
-//This file was generated by .tools/generate_commands.py on Thu Nov 27 2014 13:42:44 +0800 
+//This file was generated by .tools/generate_commands.py on Sat Jan 24 2015 10:59:30 +0800 
 package main
 
 var helpCommands = [][]string{
@@ -111,8 +111,18 @@ var helpCommands = [][]string{
 	{"SYNC", "logid", "Replication"},
 	{"TIME", "-", "Server"},
 	{"TTL", "key", "KV"},
+	{"XBREVSCAN", "key [MATCH match] [COUNT count]", "Bitmap"},
+	{"XBSCAN", "key [MATCH match] [COUNT count]", "Bitmap"},
+	{"XHREVSCAN", "key [MATCH match] [COUNT count]", "Hash"},
+	{"XHSCAN", "key [MATCH match] [COUNT count]", "Hash"},
+	{"XLREVSCAN", "key [MATCH match] [COUNT count]", "List"},
+	{"XLSCAN", "key [MATCH match] [COUNT count]", "List"},
 	{"XREVSCAN", "key [MATCH match] [COUNT count]", "KV"},
 	{"XSCAN", "key [MATCH match] [COUNT count]", "KV"},
+	{"XSREVSCAN", "key [MATCH match] [COUNT count]", "Set"},
+	{"XSSCAN", "key [MATCH match] [COUNT count]", "Set"},
+	{"XZREVSCAN", "key [MATCH match] [COUNT count]", "ZSet"},
+	{"XZSCAN", "key [MATCH match] [COUNT count]", "ZSet"},
 	{"ZADD", "key score member [score member ...]", "ZSet"},
 	{"ZCARD", "key", "ZSet"},
 	{"ZCLEAR", "key", "ZSet"},
diff --git a/doc/DiffRedis.md b/doc/DiffRedis.md
index 4460652..a20cc1f 100644
--- a/doc/DiffRedis.md
+++ b/doc/DiffRedis.md
@@ -50,11 +50,11 @@ Transaction API:
 LedisDB supplies `xscan`, `xrevscan`, etc, to fetch data iteratively and reverse iteratively.
 
 + KV:     `xscan`, `xrevscan`
-+ Hash:   `hxscan`, `hxrevscan`
-+ List:   `lxscan`, `lxrevscan`
-+ Set:    `sxscan` , `sxrevscan`
-+ Zset:   `zxscan`, `zxrevscan`
-+ Bitmap: `bxscan`, `bxrevscan`
++ Hash:   `hxscan`, `hxrevscan`, `xhscan`, `xhrevscan`
++ List:   `lxscan`, `lxrevscan`, `xlscan`, `xlrevscan`
++ Set:    `sxscan` , `sxrevscan`, `xsscan`, `xsrevscan`
++ Zset:   `zxscan`, `zxrevscan`, `xzscan`, `xzrevscan`
++ Bitmap: `bxscan`, `bxrevscan`, `xbscan`, `xbrevscan`
 
 ## DUMP
 
diff --git a/doc/commands.json b/doc/commands.json
index ee48713..7d7e84a 100644
--- a/doc/commands.json
+++ b/doc/commands.json
@@ -724,6 +724,66 @@
         "readonly": true
     },
 
+    "XBSCAN": {
+        "arguments": "key [MATCH match] [COUNT count]",
+        "group": "Bitmap",
+        "readonly": true
+    },
+
+    "XLSCAN": {
+        "arguments": "key [MATCH match] [COUNT count]",
+        "group": "List",
+        "readonly": true
+    },
+
+    "XHSCAN": {
+        "arguments": "key [MATCH match] [COUNT count]",
+        "group": "Hash",
+        "readonly": true
+    },
+
+    "XSSCAN": {
+        "arguments": "key [MATCH match] [COUNT count]",
+        "group": "Set",
+        "readonly": true
+    },
+
+    "XZSCAN": {
+        "arguments": "key [MATCH match] [COUNT count]",
+        "group": "ZSet",
+        "readonly": true
+    },
+
+    "XHREVSCAN": {
+        "arguments": "key [MATCH match] [COUNT count]",
+        "group": "Hash",
+        "readonly": true
+    },
+
+    "XLREVSCAN": {
+        "arguments": "key [MATCH match] [COUNT count]",
+        "group": "List",
+        "readonly": true
+    },
+
+    "XSREVSCAN": {
+        "arguments": "key [MATCH match] [COUNT count]",
+        "group": "Set",
+        "readonly": true
+    },
+
+    "XZREVSCAN": {
+        "arguments": "key [MATCH match] [COUNT count]",
+        "group": "ZSet",
+        "readonly": true
+    },
+
+    "XBREVSCAN": {
+        "arguments": "key [MATCH match] [COUNT count]",
+        "group": "Bitmap",
+        "readonly": true
+    },
+
     "RESTORE": {
         "arguments" : "key ttl value",
         "group" : "Server",
diff --git a/doc/commands.md b/doc/commands.md
index 6c8a235..1471b0a 100644
--- a/doc/commands.md
+++ b/doc/commands.md
@@ -50,6 +50,8 @@ Table of Contents
 	- [HPERSIST key](#hpersist-key)
 	- [HXSCAN key [MATCH match] [COUNT count]](#hxscan-key-match-match-count-count)
 	- [HXREVSCAN key [MATCH match] [COUNT count]](#hxrevscan-key-match-match-count-count)
+	- [XHSCAN key [MATCH match] [COUNT count]](#xhscan-key-match-match-count-count)
+	- [XHREVSCAN key [MATCH match] [COUNT count]](#xhrevscan-key-match-match-count-count)
 	- [HDUMP key](#hdump-key)
 - [List](#list)
 	- [BLPOP key [key ...] timeout](#blpop-key-key--timeout)
@@ -69,6 +71,8 @@ Table of Contents
 	- [LPERSIST key](#lpersist-key)
 	- [LXSCAN key [MATCH match] [COUNT count]](#lxscan-key-match-match-count-count)
 	- [LXREVSCAN key [MATCH match] [COUNT count]](#lxrevscan-key-match-match-count-count)
+	- [XLSCAN key [MATCH match] [COUNT count]](#xlscan-key-match-match-count-count)
+	- [XLREVSCAN key [MATCH match] [COUNT count]](#xlrevscan-key-match-match-count-count)
 	- [LDUMP key](#ldump-key)
 - [Set](#set)
 	- [SADD key member [member ...]](#sadd-key-member-member-)
@@ -90,6 +94,8 @@ Table of Contents
 	- [SPERSIST key](#spersist-key)
 	- [SXSCAN key [MATCH match] [COUNT count]](#sxscan-key-match-match-count-count)
 	- [SXREVSCAN key [MATCH match] [COUNT count]](#sxrevscan-key-match-match-count-count)
+	- [XSSCAN key [MATCH match] [COUNT count]](#xsscan-key-match-match-count-count)
+	- [XSREVSCAN key [MATCH match] [COUNT count]](#xsrevscan-key-match-match-count-count)
 	- [SDUMP key](#sdump-key)
 - [ZSet](#zset)
 	- [ZADD key score member [score member ...]](#zadd-key-score-member-score-member-)
@@ -118,6 +124,8 @@ Table of Contents
 ](#zinterstore-destination-numkeys-key-key--weights-weight-weight--aggregate-summinmax)
 	- [ZXSCAN key [MATCH match] [COUNT count]](#zxscan-key-match-match-count-count)
 	- [ZXREVSCAN key [MATCH match] [COUNT count]](#zxrevscan-key-match-match-count-count)
+	- [XZSCAN key [MATCH match] [COUNT count]](#xzscan-key-match-match-count-count)
+	- [XZREVSCAN key [MATCH match] [COUNT count]](#xzrevscan-key-match-match-count-count)
 	- [ZRANGEBYLEX key min max [LIMIT offset count]](#zrangebylex-key-min-max-limit-offset-count)
 	- [ZREMRANGEBYLEX key min max](#zremrangebylex-key-min-max)
 	- [ZLEXCOUNT key min max](#zlexcount-key-min-max)
@@ -135,6 +143,8 @@ Table of Contents
 	- [BPERSIST key](#bpersist-key)
 	- [BXSCAN key [MATCH match] [COUNT count]](#bxscan-key-match-match-count-count)
 	- [BXREVSCAN key [MATCH match] [COUNT count]](#bxrevscan-key-match-match-count-count)
+	- [XBSCAN key [MATCH match] [COUNT count]](#xbscan-key-match-match-count-count)
+	- [XBREVSCAN key [MATCH match] [COUNT count]](#xbrevscan-key-match-match-count-count)
 - [Replication](#replication)
 	- [SLAVEOF host port [RESTART] [READONLY]](#slaveof-host-port-restart-readonly)
 	- [FULLSYNC [NEW]](#fullsync-new)
@@ -981,6 +991,19 @@ Reverse iterate Hash keys incrementally.
 
 See [XREVSCAN](#xrevscan-key-match-match-count-count) for more information.
 
+### XHSCAN key [MATCH match] [COUNT count] 
+
+Iterate Hash keys incrementally.
+
+See [XSCAN](#xscan-key-match-match-count-count) for more information.
+
+### XHREVSCAN key [MATCH match] [COUNT count] 
+
+Reverse iterate Hash keys incrementally.
+
+See [XREVSCAN](#xrevscan-key-match-match-count-count) for more information.
+
+
 ### HDUMP key
 
 See [DUMP](#dump-key) for more information.
@@ -1319,6 +1342,19 @@ Reverse iterate list keys incrementally.
 
 See [XREVSCAN](#xrevscan-key-match-match-count-count) for more information.
 
+### XLSCAN key [MATCH match] [COUNT count] 
+
+Iterate list keys incrementally.
+
+See [XSCAN](#xscan-key-match-match-count-count) for more information.
+
+### XLREVSCAN key [MATCH match] [COUNT count] 
+
+Reverse iterate list keys incrementally.
+
+See [XREVSCAN](#xrevscan-key-match-match-count-count) for more information.
+
+
 ### LDUMP key
 
 See [DUMP](#dump-key) for more information.
@@ -1758,6 +1794,20 @@ Reverse iterate Set keys incrementally.
 
 See [XREVSCAN](#xrevscan-key-match-match-count-count) for more information.
 
+### XSSCAN key [MATCH match] [COUNT count] 
+
+Iterate Set keys incrementally.
+
+See [XSCAN](#xscan-key-match-match-count-count) for more information.
+
+
+### XSREVSCAN key [MATCH match] [COUNT count] 
+
+Reverse iterate Set keys incrementally.
+
+See [XREVSCAN](#xrevscan-key-match-match-count-count) for more information.
+
+
 ### SDUMP key
 
 See [DUMP](#dump-key) for more information.
@@ -2393,6 +2443,18 @@ Reverse iterate ZSet keys incrementally.
 
 See [XREVSCAN](#xrevscan-key-match-match-count-count) for more information.
 
+### XZSCAN key [MATCH match] [COUNT count] 
+
+Iterate ZSet keys incrementally.
+
+See [XSCAN](#xscan-key-match-match-count-count) for more information.
+
+### XZREVSCAN key [MATCH match] [COUNT count] 
+
+Reverse iterate ZSet keys incrementally.
+
+See [XREVSCAN](#xrevscan-key-match-match-count-count) for more information.
+
 ### ZRANGEBYLEX key min max [LIMIT offset count]
 
 When all the elements in a sorted set are inserted with the same score, in order to force lexicographical ordering, this command returns all the elements in the sorted set at key with a value between min and max.
@@ -2633,6 +2695,18 @@ Reverse iterate Bitmap keys incrementally.
 
 See [XREVSCAN](#xrevscan-key-match-match-count-count) for more information.
 
+### XBSCAN key [MATCH match] [COUNT count] 
+
+Iterate Bitmap keys incrementally.
+
+See [XSCAN](#xscan-key-match-match-count-count) for more information.
+
+### XBREVSCAN key [MATCH match] [COUNT count] 
+
+Reverse iterate Bitmap keys incrementally.
+
+See [XREVSCAN](#xrevscan-key-match-match-count-count) for more information.
+
 
 ## Replication
 
diff --git a/server/cmd_bit.go b/server/cmd_bit.go
index e5485c5..ac577ea 100644
--- a/server/cmd_bit.go
+++ b/server/cmd_bit.go
@@ -296,4 +296,6 @@ func init() {
 	register("bpersist", bpersistCommand)
 	register("bxscan", bxscanCommand)
 	register("bxrevscan", bxrevscanCommand)
+	register("xbscan", bxscanCommand)
+	register("xbrevscan", bxrevscanCommand)
 }
diff --git a/server/cmd_hash.go b/server/cmd_hash.go
index 69e1c5e..f232821 100644
--- a/server/cmd_hash.go
+++ b/server/cmd_hash.go
@@ -323,4 +323,6 @@ func init() {
 	register("hpersist", hpersistCommand)
 	register("hxscan", hxscanCommand)
 	register("hxrevscan", hxrevscanCommand)
+	register("xhscan", hxscanCommand)
+	register("xhrevscan", hxrevscanCommand)
 }
diff --git a/server/cmd_list.go b/server/cmd_list.go
index 1db77a1..63e6f59 100644
--- a/server/cmd_list.go
+++ b/server/cmd_list.go
@@ -307,4 +307,6 @@ func init() {
 	register("lpersist", lpersistCommand)
 	register("lxscan", lxscanCommand)
 	register("lxrevscan", lxrevscanCommand)
+	register("xlscan", lxscanCommand)
+	register("xlrevscan", lxrevscanCommand)
 }
diff --git a/server/cmd_set.go b/server/cmd_set.go
index a0e14e8..ea5a75c 100644
--- a/server/cmd_set.go
+++ b/server/cmd_set.go
@@ -290,4 +290,6 @@ func init() {
 	register("spersist", spersistCommand)
 	register("sxscan", sxscanCommand)
 	register("sxrevscan", sxrevscanCommand)
+	register("xsscan", sxscanCommand)
+	register("xsrevscan", sxrevscanCommand)
 }
diff --git a/server/cmd_zset.go b/server/cmd_zset.go
index 0fddc95..a58dbbb 100644
--- a/server/cmd_zset.go
+++ b/server/cmd_zset.go
@@ -804,4 +804,6 @@ func init() {
 	register("zpersist", zpersistCommand)
 	register("zxscan", zxscanCommand)
 	register("zxrevscan", zxrevscanCommand)
+	register("xzscan", zxscanCommand)
+	register("xzrevscan", zxrevscanCommand)
 }
diff --git a/server/scan_test.go b/server/scan_test.go
index c475f1e..d7652df 100644
--- a/server/scan_test.go
+++ b/server/scan_test.go
@@ -118,8 +118,8 @@ func testHashScan(t *testing.T, c *ledis.Client) {
 		}
 	}
 
-	checkScan(t, c, "hxscan")
-	checkRevScan(t, c, "hxrevscan")
+	checkScan(t, c, "xhscan")
+	checkRevScan(t, c, "xhrevscan")
 }
 
 func testListScan(t *testing.T, c *ledis.Client) {
@@ -129,8 +129,8 @@ func testListScan(t *testing.T, c *ledis.Client) {
 		}
 	}
 
-	checkScan(t, c, "lxscan")
-	checkRevScan(t, c, "lxrevscan")
+	checkScan(t, c, "xlscan")
+	checkRevScan(t, c, "xlrevscan")
 }
 
 func testZSetScan(t *testing.T, c *ledis.Client) {
@@ -151,8 +151,8 @@ func testSetScan(t *testing.T, c *ledis.Client) {
 		}
 	}
 
-	checkScan(t, c, "sxscan")
-	checkRevScan(t, c, "sxrevscan")
+	checkScan(t, c, "xsscan")
+	checkRevScan(t, c, "xsrevscan")
 }
 
 func testBitScan(t *testing.T, c *ledis.Client) {
@@ -162,6 +162,6 @@ func testBitScan(t *testing.T, c *ledis.Client) {
 		}
 	}
 
-	checkScan(t, c, "bxscan")
-	checkRevScan(t, c, "bxrevscan")
+	checkScan(t, c, "xbscan")
+	checkRevScan(t, c, "xbrevscan")
 }