diff --git a/mongo/cli.py b/mongo/cli.py
index 8dc2d7f..c0adb3b 100644
--- a/mongo/cli.py
+++ b/mongo/cli.py
@@ -4,9 +4,8 @@ import rq
 import redis
 import sys
 import os
-
-REDIS_URL= os.getenv("REDIS_URL","redis://localhost:6379/")
-QUEUES=os.getenv("QUEUES","high,default,low")
+import pymongo
+from config import *
 
 @click.group()
 @click.option("--dbname",default=mongocrawler.DBNAME,help="database to use")
@@ -55,11 +54,19 @@ def summary():
 def sampledomains():
     mongocrawler.sample_domains()
 
+@cli.command()
+@click.argument("domain")
+def sample(domain):
+    myclient = pymongo.MongoClient(CONNECTION)
+    db=myclient[DBNAME]
+    links = mongocrawler.sample_links(db,domain,"frontlink",BATCH_SIZE)
+    print(links)
+
 
 @cli.command(help="Enqueue a list of links into redis queue for crawling")
 def enqueue():
     # TODO: select queues
-    q = rq.Queue(connection=redis.from_url(REDIS_URL))
+    q = rq.Queue(connection=redis.from_url(CONNECTION))
     for l in sys.stdin:
         print(l.strip())
         r = q.enqueue(mongocrawler.visit, l.strip())
diff --git a/mongo/config.py b/mongo/config.py
new file mode 100644
index 0000000..7f959c8
--- /dev/null
+++ b/mongo/config.py
@@ -0,0 +1,24 @@
+import os
+# database options
+CONNECTION=os.getenv("SUCKER_CONNECTION","mongodb://root:example@localhost:27017/")
+
+QUEUES=os.getenv("QUEUES","high,default,low")
+DBNAME=os.getenv("SUCKER_DBNAME","crawler")
+# retrieving filter
+BATCH_SIZE = int(os.getenv("SUCKER_BATCH_SIZE","10"))
+MIN_FILE_SIZE=int(os.getenv("SUCKER_MIN_FILE_SIZE","300"))
+MAX_FILE_SIZE=int(os.getenv("SUCKER_MAX_FILE_SIZE","10000000"))
+# document originality filter
+MIN_TEXT_SIZE=int(os.getenv("SUCKER_MIN_TEXT_SIZE","200"))
+CHECK_PARAGRAPH_SIZE=int(os.getenv("SUCKER_CHECK_PARAGRAPH_SIZE","150"))
+TEXT_TRASH_RATIO=float(os.getenv("SUCKER_TEXT_TRASH_RATIO","0.6"))
+# link and domain sampling
+DISCOVER_LINK_RATIO = float(os.getenv("SUCKER_DISCOVER_LINK_RATIO","0.3"))
+SAMPLE_SET_SIZE = int(os.getenv("SUCKER_DISCOVER_LINK_RATIO","10000"))
+CLASSIFIER_SET_SIZE = int(os.getenv("SUCKER_DISCOVER_LINK_RATIO","200"))
+# link filter
+LANGUAGE= os.getenv("SUCKER_LANGUAGE","sk")
+DOMAIN = os.getenv("SUCKER_DOMAIN","sk")
+STOP_PATHS=os.getenv("SUCKER_STOP_PATHS","xml,rss,login,admin").split(",")
+
+
diff --git a/mongo/mongocrawler.py b/mongo/mongocrawler.py
index 19a7353..6bae2b2 100644
--- a/mongo/mongocrawler.py
+++ b/mongo/mongocrawler.py
@@ -27,25 +27,7 @@ import os.path
 import binascii
 import json
 
-# database options
-CONNECTION=os.getenv("SUCKER_CONNECTION","mongodb://root:example@localhost:27017/")
-DBNAME=os.getenv("SUCKER_DBNAME","crawler")
-# retrieving filter
-BATCH_SIZE = int(os.getenv("SUCKER_BATCH_SIZE","10"))
-MIN_FILE_SIZE=int(os.getenv("SUCKER_MIN_FILE_SIZE","300"))
-MAX_FILE_SIZE=int(os.getenv("SUCKER_MAX_FILE_SIZE","10000000"))
-# document originality filter
-MIN_TEXT_SIZE=int(os.getenv("SUCKER_MIN_TEXT_SIZE","200"))
-CHECK_PARAGRAPH_SIZE=int(os.getenv("SUCKER_CHECK_PARAGRAPH_SIZE","150"))
-TEXT_TRASH_RATIO=float(os.getenv("SUCKER_TEXT_TRASH_RATIO","0.6"))
-# link and domain sampling
-DISCOVER_LINK_RATIO = float(os.getenv("SUCKER_DISCOVER_LINK_RATIO","0.3"))
-SAMPLE_SET_SIZE = int(os.getenv("SUCKER_DISCOVER_LINK_RATIO","10000"))
-CLASSIFIER_SET_SIZE = int(os.getenv("SUCKER_DISCOVER_LINK_RATIO","200"))
-# link filter
-LANGUAGE= os.getenv("SUCKER_LANGUAGE","sk")
-DOMAIN = os.getenv("SUCKER_DOMAIN","sk")
-STOP_PATHS=os.getenv("SUCKER_STOP_PATHS","xml,rss,login,admin").split(",")
+from config import *
 
 def get_bs_links(link,html):
     # Extrakcia linkov zo stranky