diff --git a/cmd.sh b/cmd.sh
new file mode 100755
index 0000000..d482aca
--- /dev/null
+++ b/cmd.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+echo $1
+echo $2
+
+echo $3
+echo $4
diff --git a/mark.sh b/mark.sh
new file mode 100755
index 0000000..b2795e4
--- /dev/null
+++ b/mark.sh
@@ -0,0 +1,86 @@
+#!/bin/bash
+
+scriptName=$(basename $0)
+version=0.1
+original=""
+sources=""
+verbose=0
+tmpFilename='.tmp.compile_commands.json'
+srcOriginalPath="../../git/src"
+
+function print {
+  verbose=$1
+  message=$2
+  if [[ $verbose -eq 1 ]]; then
+    echo "[V] $message"
+  fi
+}
+
+function usage {
+  echo "
+	Usage: $scriptName [OPTIONS]
+	Options: 
+  [-o|--original] - location of a original compile_commands.json (e.g. -o /tmp/test/compile_commands.json)
+  [-s|--sources] - location of your sources directory (e.g. /external_chr/src/)
+  [-g|--gitsrc] - location of an original src directory; default ../../git/src/ (relative to build/Release)
+	"
+}
+
+function about {
+  echo "
+  ${scriptName} ver.${version} 
+  This script's purpose to deal with external sources of a project for which compile commands
+  are generated.
+  for usage examples call 
+    ${scriptName} [-h|--help] 
+  "
+}
+
+while [[ "$1" =~ ^- && ! "$1" == "--" ]]; do
+  case $1 in
+  -a | --about)
+    about
+    exit
+    ;;
+  -h | --help)
+    usage
+    exit
+    ;;
+  -o | --original)
+    shift
+    original=$1
+    ;;
+  -s | --sources)
+    shift
+    sources=$1
+    ;;
+  -g | --gitsrc)
+    shift
+    srcOriginalPath=$1
+    ;;
+  -v | --verbose)
+    verbose=1
+    ;;
+  esac
+  shift
+done
+
+print $verbose "original=$original && sources=$sources"
+
+cp $original $tmpFilename
+
+buildDirectory=$(grep directory $original | head -n 1 | cut -d ':' -f 2 | cut -d '"' -f 2)
+
+print $verbose "buildDirectory=$buildDirectory"
+
+if command -v pv &>/dev/null; then
+  pv $tmpFilename | sed "s|${srcOriginalPath}|${sources}|g" >${sources}/compile_commands.json
+else
+  echo "pv was not found on PATH so just wait..."
+  sed "s|${srcOriginalPath}|${sources}|g" $tmpFilename
+  cp $tmpFilename ${sources}/compile_commands.json
+fi
+
+print $verbose "original compile_commands src path ($srcOriginalPath) was changed to $sources"
+
+rm $tmpFilename
diff --git a/tun.sh b/tun.sh
index 6e63028..af74bae 100755
--- a/tun.sh
+++ b/tun.sh
@@ -3,13 +3,15 @@ scriptName=$(basename $0)
 version=0.1
 idx=0
 killFlag=0
+localServiceIp="192.168.105.100"
+remoteIp="172.26.123.156"
 endpoint="192.168.105.100"
 user="$USER"
 cacheFile=.tunLast
-privateKeyLoc="~/.ssh/id_ecdsa"
+privateKeyLoc="~/.ssh/id_ed25519"
 override=0
 debug=0
-
+local="R"
 
 fromPort=0
 toPort=0
@@ -17,13 +19,11 @@ function killTunnel {
 	if [[ debug -eq 1 ]]; then 
 		printf "killTunnel %d\n" $toPort
 	fi
-	pkill -f "ssh -i ${privateKeyLoc} -fNL 0.0.0.0:$toPort:"
-	iptables -D INPUT -p tcp --dport $toPort -j ACCEPT 2>/dev/null
+	pkill -f "ssh -i ${privateKeyLoc} -fN${local} $toPort:"
 }
 
 function openTunnel {
-	ssh -i ${privateKeyLoc} -fNL 0.0.0.0:$toPort:${endpoint}:$fromPort ${user}@localhost
-	iptables -A INPUT -p tcp --dport $toPort -j ACCEPT 2>/dev/null
+	ssh -i ${privateKeyLoc} -fN${local} $toPort:${endpoint}:$fromPort ${user}@${remoteIp}
 }
 
 function parsePort {
@@ -43,6 +43,7 @@ function usage {
 	  -k | --kill		Try to kill defined tunnels, if missing will try to create them
 	  -p | --port FROM:TO	Define new port forwarding rule, if in format FROM:TO - will create
 	  			tunnel from port FROM on defined endpoint to port TO on local
+	  -u | --user USERNAME  Define the user name on behalf of who will try to connect to remote target
 	"
 }
 
@@ -61,6 +62,14 @@ while [[ "$1" =~ ^- && ! "$1" == "--" ]]; do case $1 in
     about
     exit
     ;;
+  -u | --user )
+    shift;
+    user=$1
+    ;;
+  -l | --local )
+	local="L"
+	remoteIp="localhost"
+	;;
   -k | --kill )
     killFlag=1
     ;;
@@ -80,6 +89,10 @@ while [[ "$1" =~ ^- && ! "$1" == "--" ]]; do case $1 in
 esac; shift; done
 if [[ "$1" == '--' ]]; then shift; fi
 
+if [[ ${debug} -eq 1 ]]; then
+	about
+fi
+
 if [[ ${#port[@]} -gt 0 ]]; then
 	printf "PORT TO OPEN: %s\n" ${port[@]}
 fi
@@ -103,5 +116,5 @@ done
 printf "%s\\n" "${port[@]}" > ${cacheFile}
 
 if [[ ${debug} -eq 1 ]]; then
-	netstat -lnptu | grep ssh
+	ps aux | grep "ssh -i ${privateKeyLoc}" | grep -v grep
 fi