diff --git a/DEBIAN/control b/DEBIAN/control
index e35de60..132f7d0 100644
--- a/DEBIAN/control
+++ b/DEBIAN/control
@@ -1,6 +1,6 @@
 Package: remaster
 Source: remaster
-Version: 2.0.2
+Version: 2.0.3
 Architecture: all
 Maintainer: 6543 <6543@obermui.de>
 Installed-Size: <SIZE>
diff --git a/README.md b/README.md
index 780fda9..b1c35b1 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@ The aim of this Project is to create a daemon for a server, witch update live sy
 - wget
 - sed
 - sendemail
+- curl
 
 ## To Do
 
diff --git a/changes/remaster.md b/changes/remaster.md
index eb79d3f..d5f582d 100644
--- a/changes/remaster.md
+++ b/changes/remaster.md
@@ -18,3 +18,9 @@
 
 2018-05-13 - 2.0.2
  * hotfix-2.0.2 ( create release folder if not exist )
+
+2018-05-20 - 2.0.3
+ * make email, proxy optional
+ * change Strukture.md
+ * add config check
+ * some help scripts
diff --git a/doc/Strukture.md b/doc/Strukture.md
index f209963..0a6e53f 100644
--- a/doc/Strukture.md
+++ b/doc/Strukture.md
@@ -1,28 +1,113 @@
-# Src
+# 1. Starte "remaster"
 
-raw scripts ..
+## 1.1 Lade Grundfunctionen                                      [-> #functions]
 
-## functions
+## 1.2 Überprüfe ...
+  * auf Updates
+  * auf Rechte
 
- - creat iso
- - burn cd ...
- - clean workspace ...
+## 1.3 Lade Richtige Einstellungen                               [-> #config]
+  * Lade /etc/remaster/<Conf>
+  * Überprüfe Conf. (Proj Exist; Mods Exist; ...)
 
+## 1.4 Lade Proj-Func                                            [-> #projects]
+  * Überlade nach Abhängigkeit
+  * (z.B.  ubuntu.16.04 -> ubuntu -> debian)
+  * Prüfe Conf. (Proj Conform)
 
-## distros
+## 1.5 Lade $n Mods (optional)                                   [-> #mods]
+  * Überprüfen
+  * Spechern in MOD_LST
 
-scripts vor distros
- - update
- - set network settings
- - set OS settings
+# 2. Init Chroot
 
-## mods
- - for example: install & enable xrdp
- - set default passwd
- - ...
+## 2.1 Dateien Entpacken
+  * ISO
+  * Squashfs
 
-## web
-placeholder for webfiles ...
+## 2.2 Config für Chroot (chroot_initial)
+  * (lxc-conf / tmpdir)
+  * Netzwerk
 
-## pxe
-placeholder for pxefiles ...
+## 2.3 Starte Chroot
+  * (lxc-start / mount ...)
+
+# 3. Modivikationen
+
+## 3.1 Netzwerk
+
+## 3.2 Proj-Spez.
+  * (z.B. Desinfect: conky_info)
+
+## 3.3 Packet Mgr
+  * Updates
+  * Install
+  * Delete
+
+## 3.4 Weitere in $MOD_LST
+  * z.B. xrdp
+  * z.B. default pw
+
+# 4. Finish
+
+## 4.1 Aufreumen Live-Sys
+  * tmpfiles
+  * Packet Mgr
+
+## 4.2 Stop chroot
+  * Umount
+
+## 4.3. Gen ISO/PXE
+
+## 4.4. Del Chroot
+
+# 5. Send Log
+
+----
+
+## lxc
+
+-> chroot_sh exec lxc-attach
+
+-> chroot_dir = container name
+
+----
+
+## PXE
+
+-> Install
+  * DHCP Relay
+  * NFS-Server
+  * TFTP-Server
+  * [Samba]
+
+-> Setup
+  * (use <Lib>/proj/<proj> func)
+  * SMB/NFS LiveSys export
+  * TFTP (Boot Menue; Boot Loader; Kernel&Initrd)
+
+-> Deinstall
+  * RM TFTP-Root
+  * RM SMB/NFS LiveSys export
+  * del DHCP Relay conf
+
+----
+
+## Jobs
+  * Read Confs -> get time interfall I
+  * Exec remaster <Conf> for I
+
+----
+
+## Web
+
+show/edit #Configs
+
+show (+live) #Logs
+
+start/stop/plan #Jobs
+
+start/stop/edit #PXE menue
+  * default
+  * all / single / none
+  * live view new clients
diff --git a/doc/lib-header.txt b/doc/lib-head+tail
similarity index 61%
rename from doc/lib-header.txt
rename to doc/lib-head+tail
index d3c48f7..597257f 100644
--- a/doc/lib-header.txt
+++ b/doc/lib-head+tail
@@ -2,10 +2,12 @@
 #remaster lib
 [ -d "<LIBDIR>" ] || { echo "LIBDIR not exist"; exit 1; }
 
-#beginn func
-
+#<function> [param]
+function <function>() {
+    #Code of <function>
+}
 
 #this func is standalone executable
 [ -n "$1" ] && {
-    check_user
+    <function> $@
 }
diff --git a/script/add_function.sh b/script/add_function.sh
new file mode 100755
index 0000000..17bd495
--- /dev/null
+++ b/script/add_function.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+#check param
+[ -z "$1" ] && { echo "$0 [name]"; exit 1; }
+name="$1"
+
+#gen function
+cp "doc/lib-head+tail" "src/func/$name"
+sed -i "s/<function>/$name/g" "src/func/$name"
+
+#open
+editor "src/func/$name"
diff --git a/script/get_version.sh b/script/get_version.sh
new file mode 100755
index 0000000..e58d5ec
--- /dev/null
+++ b/script/get_version.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+grep '@version ' src/remaster.sh | cut -d " " -f 2
diff --git a/script/set_version.sh b/script/set_version.sh
index d170fe9..e012b21 100755
--- a/script/set_version.sh
+++ b/script/set_version.sh
@@ -8,10 +8,10 @@ date=`date +%Y-%m-%d`
   version_sed=`echo $version | sed 's/\./\\./g'`
 
   #nummer
-  sed -i "s/@version\ .\..\../@version\ $version_sed/g" src/remaster.sh
+  sed -i "/#@version\ /c\#@version\ $version_sed" src/remaster.sh
 
   #datum
-  sed -i "s/@date\ ....-..-../@date\ $date/g" src/remaster.sh
+  sed -i "/#@date\ /c\#@date\ $date" src/remaster.sh
 }
 
 [ -e "changes/remaster.md" ] && {
@@ -22,5 +22,5 @@ date=`date +%Y-%m-%d`
 }
 
 [ -f "DEBIAN/control" ] && {
-  sed -i "s/Version:\ .\..\../Version:\ $version_sed/g" "DEBIAN/control"
+  sed -i "/Version:\ /c\Version:\ $version_sed" "DEBIAN/control"
 }
diff --git a/src/func/check_config b/src/func/check_config
new file mode 100755
index 0000000..fcb70b0
--- /dev/null
+++ b/src/func/check_config
@@ -0,0 +1,55 @@
+#!/bin/bash
+#remaster lib
+[ -d "<LIBDIR>" ] || { echo "LIBDIR not exist"; exit 1; }
+
+#check_config
+function check_config() {
+
+    #Project
+    [ -f "<LIBDIR>/proj/$distro" ] || {
+        echo "No Project \"$distro\" is not supported"
+        return 3
+    }
+
+    #live-system files
+    if [ -f "$iso_source" ]; then
+        if [ -n "$iso_destination" ] && [ -d "${iso_destination%/*}" ]; then
+            #Lable
+            [ -z "$iso_lable" ] && iso_lable="$distro"
+
+            echo 'iso_source -> iso_destination'
+            echo 'iso_source -> squashfs [optinal]'
+        else
+            if [ -n "$filesystem_source" ] && [ -d "${filesystem_source%/*}" ]; then
+                echo 'iso_source -> squashfs'
+            else
+                # ERROR
+                echo "No corect AIM in Settings"
+                return 3
+            fi
+        fi
+    else
+        if [ -f "$filesystem_source" ]; then
+            if [ -n "$iso_destination" ]; then
+                # ERROR
+                echo "only Squashfs source in Settings, cant creat ISO"
+                return 3
+            else
+                echo 'squashfs -> squashfs'
+            fi
+        else
+            # ERROR
+            echo "No corect Source in Settings"
+            return 3
+        fi
+    fi
+
+
+
+
+}
+
+#this func is standalone executable
+[ -n "$1" ] && {
+    check_config $@
+}
diff --git a/src/func/check_update b/src/func/check_update
index 7a1847d..79d6d99 100755
--- a/src/func/check_update
+++ b/src/func/check_update
@@ -5,9 +5,9 @@
 #check_update
 function check_update() {
     if curl https://raw.githubusercontent.com/6543/remaster/master/changes/remaster.md | diff - <(zcat <ROOTDIR>/usr/share/doc/remaster/changelog.gz ); then
-			echo 'REMASTER: Aktuell'
+			echo 'INFO: Programm Aktuell'
 	else
-			echo 'REMASTER: Warning: neue Version verfügbar'
+			echo 'WARNUNG: neue Version verfügbar'
     fi
 }
 
diff --git a/src/func/on_exit b/src/func/on_exit
index 0801b75..59774f1 100755
--- a/src/func/on_exit
+++ b/src/func/on_exit
@@ -4,28 +4,31 @@
 
 #on_exit [error_level]
 function on_exit() {
-	#send log and errorlevel[success/errorr xy]
+  ### send mail
+  [ -n "$log_mail_aim" ] && {
+    #send log and errorlevel[success/errorr xy]
+    if [ "$1" != "0" ]; then
+      log_mail_subject="$log_mail_subject [ERROR]"
+    else
+      log_mail_subject="$log_mail_subject [Success]"
+    fi
 
-	if [ "$1" != "0" ]; then
-		log_mail_subject="$log_mail_subject [ERROR]"
-	else
-		log_mail_subject="$log_mail_subject [Success]"
-	fi
+    #Mail Body:
+    for mail_aim in `echo "$log_mail_aim" | tr "," " "`; do
+      {
+        echo "$log_mail_subject"
+        echo $'####################################################################################\n\n'
+        cat "$log_file"
+      } | sendemail -s "$log_mail_smtp" -f "$log_mail_source" -t "$mail_aim" -u "$log_mail_subject" -o tls=no
+    done
+  }
 
-	#Mail Body:
-	for mail_aim in `echo "$log_mail_aim" | tr "," " "`; do
-		{
-			echo "$log_mail_subject"
-			echo $'####################################################################################\n\n'
-			cat "$log_file"
-		} | sendemail -s "$log_mail_smtp" -f "$log_mail_source" -t "$mail_aim" -u "$log_mail_subject" -o tls=no
-	done
-
-	[ "$1" != "0" ] && {
-		chroot_umount$distro "$chroot_path" 2> /dev/null
-		workspace_erase "$iso_extr_dir/" "$chroot_path/" 2> /dev/null
-	}
-	exit $1
+  ### clean up
+  [ "$1" != "0" ] && {
+    chroot_umount$distro "$chroot_path" 2> /dev/null
+    workspace_erase "$iso_extr_dir/" "$chroot_path/" 2> /dev/null
+  }
+  exit $1
 }
 
 #this func is standalone executable
diff --git a/src/proj/desinfect2017 b/src/proj/desinfect2017
new file mode 100644
index 0000000..e69de29
diff --git a/src/remaster.sh b/src/remaster.sh
index 317b057..d3a0e34 100755
--- a/src/remaster.sh
+++ b/src/remaster.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
-#@version 2.0.2
+#@version 2.0.3
 #@autor 6543@obermui.de
-#@date 2018-05-13
+#@date 2018-05-20
 #@licence GNUv3
 
 #####################################################################################
@@ -25,6 +25,23 @@ else
     exit 1
   fi
 fi
+#check LOG
+{
+  [ -z "$log_file" ] && log_file="/tmp/remaster_`date '+%Y-%m-%d'`"
+
+  if [ -f "$log_file" ]; then
+    echo > "$log_file"
+  else
+    #check if folder exist
+    [ -d "${log_file%/*}" ] || {
+        # N-> exit 3
+        echo "Directory for Log didnt exist"
+        exit 3
+    }
+    #create LOG
+    touch "$log_file"
+  fi
+}
 
 #####################################################################################
 ################## M o d e s ########################################################
@@ -32,8 +49,7 @@ fi
 
 #remaster.sh renew
 function main_renew() {
-
-  [ -f "$log_file" ] || touch "$log_file"
+  #Start LOG
   tail -f "$log_file" --pid="$$" &
 
   chroot_path="`mktemp -d`"
@@ -90,7 +106,10 @@ function main_renew() {
   check_dependency
   error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
 
-  check_update | tee -a "$log_file"
+  check_config >> "$log_file"
+  error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
+
+  check_update >> "$log_file"
 
   [ "$distro" != "" ] && distro="_$distro"
 
@@ -113,9 +132,10 @@ function main_renew() {
   error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
 
   # 5. Setzen der Netzwerk-Einstellungen:
-
-  proxy_enable$distro "$chroot_path" "$proxy_host" "$proxy_port" >> "$log_file"
-  error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
+  [ -n "$proxy_host" ] && {
+    proxy_enable$distro "$chroot_path" "$proxy_host" "$proxy_port" >> "$log_file"
+    error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
+  }
 
   dns_set "$chroot_path" "$domain" "$nameserver" >> "$log_file"
   error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
@@ -194,8 +214,7 @@ function main_renew() {
 #remaster.sh update_pxe
 function main_update_pxe() {
 
-  [ "$log_file" == "" ] && log_file="`mktemp`"
-  [ -f "$log_file" ] || touch "$log_file"
+  #Start LOG
   tail -f "$log_file" --pid="$$" &
 
   chroot_path="`mktemp -d`"
@@ -239,11 +258,14 @@ function main_update_pxe() {
   check_user
   error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
 
-  check_update | tee -a "$log_file"
+  check_update >> "$log_file"
 
   check_dependency
   error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
 
+  check_config >> "$log_file"
+  error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
+
   [ "$distro" != "" ] && distro="_$distro"
 
   # 1. Entpacken der Dateien des Live-Systems
@@ -307,7 +329,7 @@ function main_update_pxe() {
 
 #remaster.sh update_iso #in arbeit
 function main_update_iso() {
-  [ -f "$log_file" ] || touch "$log_file"
+  #Start LOG
   tail -f "$log_file" --pid="$$" &
 
   chroot_path="`mktemp -d`"
@@ -361,11 +383,14 @@ function main_update_iso() {
   check_user
   error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
 
-  check_update | tee -a "$log_file"
+  check_update >> "$log_file"
 
   check_dependency
   error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
 
+  check_config >> "$log_file"
+  error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
+
   [ "$distro" != "" ] && distro="_$distro"
 
   # 2. Entpacke ISO
@@ -397,9 +422,10 @@ function main_update_iso() {
   error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
 
   # 5. Setzen der Netzwerk-Einstellungen:
-
-  proxy_enable$distro "$chroot_path" "$proxy_host" "$proxy_port" >> "$log_file"
-  error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
+  [ -n "$proxy_host" ] && {
+    proxy_enable$distro "$chroot_path" "$proxy_host" "$proxy_port" >> "$log_file"
+    error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
+  }
 
   dns_set "$chroot_path" "$domain" "$nameserver" >> "$log_file"
   error_level="$?"; [ "$error_level" != "0" ] && on_exit $error_level >> "$log_file"
@@ -477,6 +503,9 @@ function main_update_iso() {
 
 ### Error Handlings ###
 
+#check_config
+source <LIBDIR>/func/check_config
+
 #on_exit [error_level]
 source <LIBDIR>/func/on_exit
 
@@ -490,6 +519,8 @@ source <LIBDIR>/func/check_user
 # -> 0 | -> 16
 source <LIBDIR>/func/check_dependency
 
+#check_update
+source <LIBDIR>/func/check_update
 
 ### Workspace ###