diff --git a/HOWTO.md b/HOWTO.md
index 1a66402b..50fad074 100644
--- a/HOWTO.md
+++ b/HOWTO.md
@@ -96,3 +96,31 @@ In AIL, you can track terms, set of terms and even regexes without creating a de
 - You can track a term by simply putting it in the box.
 - You can track a set of terms by simply putting terms in an array surrounded by the '\' character. You can also set a custom threshold regarding the number of terms that must match to trigger the detection. For example, if you want to track the terms _term1_ and _term2_ at the same time, you can use the following rule: `\[term1, term2, [100]]\`
 - You can track regexes as easily as tracking a term. You just have to put your regex in the box surrounded by the '/' character. For example, if you want to track the regex matching all email address having the domain _domain.net_, you can use the following aggressive rule: `/*.domain.net/`.
+
+
+Crawler
+---------------------
+In AIL, you can crawl hidden services.
+
+two types of configutation [explaination for what]:
+	1) use local Splash dockers (use the same host for Splash servers and AIL)
+	2) use remote Splash servers
+
+- (Splash host) Launch ``crawler_hidden_services_install.sh`` to install all requirement (type ``y`` if a localhost splah server is used)
+- (Splash host) Setup your tor proxy[is already installed]: 
+	- Add the following line in ``/etc/tor/torrc: SOCKSPolicy accept 172.17.0.0/16``
+  	  (for a linux docker, the localhost IP is 172.17.0.1; Should be adapted for other platform)
+	- Restart the tor proxy: ``sudo service tor restart``
+
+- (Splash host) Launch all Splash servers with: ``sudo ./bin/torcrawler/launch_splash_crawler.sh [-f <config absolute_path>] [-p <port_start>] [-n <number_of_splash>]``
+  all the Splash dockers are launched inside the ``Docker_Splash`` screen. You can use ``sudo screen -r Docker_Splash`` to connect to the screen session and check all Splash servers status.
+
+- (AIL host) Edit the ``/bin/packages/config.cfg`` file:
+	- In the crawler section, set ``activate_crawler`` to ``True``
+	- Change the IP address of Splash servers if needed (remote only)
+	- Set ``splash_onion_port`` according to your Splash servers port numbers who are using the tor proxy. those ports numbers should be described as a single port (ex: 8050) or a port range (ex: 8050-8052 for 8050,8051,8052 ports).
+
+- (AIL host) launch all AIL crawler scripts using: ``./bin/LAUNCH.sh -c``
+
+
+
diff --git a/bin/LAUNCH.sh b/bin/LAUNCH.sh
index a7c0631d..3b17a4a6 100755
--- a/bin/LAUNCH.sh
+++ b/bin/LAUNCH.sh
@@ -201,23 +201,28 @@ function launching_scripts {
 }
 
 function launching_crawler {
-  CONFIG=$AIL_BIN/packages/config.cfg
-  lport=$(awk '/^\[Crawler\]/{f=1} f==1&&/^splash_onion_port/{print $3;exit}' "${CONFIG}")
-  echo $lport
+    CONFIG=$AIL_BIN/packages/config.cfg
+    lport=$(awk '/^\[Crawler\]/{f=1} f==1&&/^splash_onion_port/{print $3;exit}' "${CONFIG}")
 
-  IFS='-' read -ra PORTS <<< "$lport"
-  first_port=${PORTS[0]}
-  last_port=${PORTS[1]}
+    IFS='-' read -ra PORTS <<< "$lport"
+    if [ ${#PORTS[@]} -eq 1 ]
+    then
+        first_port=${PORTS[0]}
+        last_port=${PORTS[0]}
+    else
+        first_port=${PORTS[0]}
+        last_port=${PORTS[1]}
+    fi
 
-  screen -dmS "Crawler_AIL"
-  sleep 0.1
+    screen -dmS "Crawler_AIL"
+    sleep 0.1
 
-  for ((i=first_port;i<=last_port;i++)); do
-      screen -S "Crawler_AIL" -X screen -t "onion_crawler:$i" bash -c 'cd '${AIL_BIN}'; ./Crawler.py onion '$i'; read x'
-      sleep 0.1
-  done
+    for ((i=first_port;i<=last_port;i++)); do
+        screen -S "Crawler_AIL" -X screen -t "onion_crawler:$i" bash -c 'cd '${AIL_BIN}'; ./Crawler.py onion '$i'; read x'
+        sleep 0.1
+    done
 
-  echo -e $GREEN"\t* Launching Crawler_AIL scripts"$DEFAULT
+    echo -e $GREEN"\t* Launching Crawler_AIL scripts"$DEFAULT
 }
 
 function shutting_down_redis {
@@ -465,7 +470,7 @@ function launch_all {
 
 while [ "$1" != "" ]; do
     case $1 in
-        -l | --launchAuto )         launch_all "automatic"; launching_crawler
+        -l | --launchAuto )         launch_all "automatic";
                                     ;;
         -k | --killAll )            killall;
                                     ;;
diff --git a/bin/packages/config.cfg.sample b/bin/packages/config.cfg.sample
index 64b1f7f6..c30fa071 100644
--- a/bin/packages/config.cfg.sample
+++ b/bin/packages/config.cfg.sample
@@ -240,4 +240,4 @@ db = 0
 activate_crawler = True
 crawler_depth_limit = 1
 splash_url_onion = http://127.0.0.1
-splash_onion_port = 8050-8050
+splash_onion_port = 8050-8052
diff --git a/bin/torcrawler/launch_splash_crawler.sh b/bin/torcrawler/launch_splash_crawler.sh
index 37963e93..e78656ab 100755
--- a/bin/torcrawler/launch_splash_crawler.sh
+++ b/bin/torcrawler/launch_splash_crawler.sh
@@ -1,12 +1,12 @@
 #!/bin/bash
 
 usage() { echo "Usage: sudo $0 [-f <config_absolute_path>] [-p <port_start>] [-n <number_of_splash_servers>]" 1>&2;
-          echo "          -f: absolute path to splash docker proxy-profiles directory (used for proxy configuration)"
-          echo "          -p: number of the first splash server port number. This number is incremented for the others splash server"
-          echo "          -n: number of splash servers to start"
-          echo ""
-          echo "example:"
-          echo "sudo ./launch_splash_crawler.sh -f /home/my_user/AIL-framework/configs/docker/splash_onion/etc/splash/proxy-profiles/ -p 8050 -n 3"
+          echo "          -f: absolute path to splash docker proxy-profiles directory (used for proxy configuration)";
+          echo "          -p: number of the first splash server port number. This number is incremented for the others splash server";
+          echo "          -n: number of splash servers to start";
+          echo "";
+          echo "example:";
+          echo "sudo ./launch_splash_crawler.sh -f /home/my_user/AIL-framework/configs/docker/splash_onion/etc/splash/proxy-profiles/ -p 8050 -n 3";
           exit 1;
         }
 
@@ -29,8 +29,7 @@ done
 shift $((OPTIND-1))
 
 if [ -z "${p}" ] || [ -z "${f}" ] || [ -z "${n}" ]; then
-    #usage
-    echo "usage"
+    usage;
 fi
 
 screen -dmS "Docker_Splash"
diff --git a/crawler_hidden_services_install.sh b/crawler_hidden_services_install.sh
index 3cdb96bd..3fbccb74 100755
--- a/crawler_hidden_services_install.sh
+++ b/crawler_hidden_services_install.sh
@@ -1,15 +1,56 @@
 #!/bin/bash
 
-read -p "Do you want to install docker? (use local splash server) [y/n] " -n 1 -r
-echo    # (optional) move to a new line
-if [[ $REPLY =~ ^[Yy]$ ]]
-then
+install_docker() {
     # install docker
-    sudo apt install docker.io
+    sudo apt install docker.io;
+
+    # pull splah docker
+    sudo docker pull scrapinghub/splash;
+}
+
+install_python_requirement() {
+    . ./AILENV/bin/activate;
+    pip3 install -U -r crawler_requirements.txt;
+}
+
+install_all() {
+    read -p "Do you want to install docker? (use local splash server) [y/n] " -n 1 -r
+    echo    # (optional) move to a new line
+    if [[ $REPLY =~ ^[Yy]$ ]]
+    then
+        install_docker;
+    fi
+    install_python_requirement;
+}
+
+usage() {
+  echo "Usage: crawler_hidden_services_install.sh [-y | -n]" 1>&2;
+            echo "          -y: install docker"
+            echo "          -n: don't install docker"
+            echo ""
+            echo "example:"
+            echo "crawler_hidden_services_install.sh -y"
+            exit 1;
+}
+
+if [[ $1 == "" ]]; then
+    install_all;
+    exit;
+else
+  key="$1"
+  case $key in
+      "")
+      install_all;
+      ;;
+      -y|--yes)
+      install_docker;
+      install_python_requirement;
+      ;;
+      -n|--no)
+      install_python_requirement;
+      ;;
+      *)    # unknown option
+      usage;
+      ;;
+  esac
 fi
-
-# pull splah docker
-sudo docker pull scrapinghub/splash
-
-. ./AILENV/bin/activate
-pip3 install -U -r pip3_packages_requirement.txt