diff --git a/home_external/.bash_aliases b/home_external/.bash_aliases
index 34f2456..049b310 100644
--- a/home_external/.bash_aliases
+++ b/home_external/.bash_aliases
@@ -40,6 +40,11 @@ alias dirsizes='du -kh --apparent-size --max-depth=1 | sort -hr'
 alias start_x11_vnc="x11vnc -many -display :0 -no6 -rfbport 5900 -auth /var/run/lightdm/root/:0 -rfbauth $HOME/.vnc/passwd"
 
 
+commandExists() {
+   type $1 2 >& 1 > /dev/null
+}
+
+
 rsyncLink() {
    source=$1;
    linkSource="$(realpath $source)";
@@ -52,7 +57,7 @@ rsyncLink() {
 
 
 updateSystem() {
-  executeAndNotify "doUpdateSystem $1" "system updated" "system update failed"
+   executeAndNotify "doUpdateSystem $1" "system updated" "system update failed"
 }
 
 
@@ -63,6 +68,9 @@ doUpdateSystem() {
 
 
 updateFlatpak() {
+   if [[ ! $(commandExists flatpak) ]]; then
+      return 1;
+   fi
    noconfirm=
    if [[ $1 == "-y" ]]; then
       noconfirm="--assumeyes";
@@ -119,11 +127,19 @@ finds () {
 
 # sends a desktop-notification with an icon signalling an error
 notifyError () {
-   notify-send "$1" --icon=data-warning;
+   if [[ ! $(commandExists notify-send) ]]; then
+      echo "ERROR: $1";
+   else
+      notify-send "$1" --icon=data-warning;
+   fi
 }
 
 
 # sends a desktop-notification with an icon signalling a simple information
 notifyInfo () {
-   notify-send "$1" --icon=preferences-desktop-notification;
+   if [[ ! $(commandExists notify-send) ]]; then
+      echo "INFO: $1";
+   else
+      notify-send "$1" --icon=preferences-desktop-notification;
+   fi
 }
diff --git a/home_external/.bashrc b/home_external/.bashrc
index 2ff28c1..a6b623c 100644
--- a/home_external/.bashrc
+++ b/home_external/.bashrc
@@ -2,7 +2,7 @@
 # see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
 # for examples
 
-set -o pipefail
+# set -o pipefail
 # set -u
 
 # If not running interactively, don't do anything
diff --git a/home_external/.config/wezterm/.wezterm.lua b/home_external/.config/wezterm/.wezterm.lua
deleted file mode 100644
index ba56929..0000000
--- a/home_external/.config/wezterm/.wezterm.lua
+++ /dev/null
@@ -1,116 +0,0 @@
--- Pull in the wezterm API
-local wezterm = require 'wezterm'
-local act = wezterm.action
-local mux = wezterm.mux
-
--- This will hold the configuration.
-local config = wezterm.config_builder()
-
--- This is where you actually apply your config choices
-
--- For example, changing the color scheme:
-config.color_scheme = 'AdventureTime'
--- config.font = wezterm.font 'JetBrains Mono' -- also the default
-config.font = wezterm.font 'Fira Code'
-config.font_size = 12.0 -- also the default
-
--- Spawn a git bash shell
-config.default_prog = { 'C:/Program Files/Git/bin/bash.exe' , '--cd-to-home' }
-
--- cursor shape and behaviour
-config.default_cursor_style = 'BlinkingBar'
-config.animation_fps = 1
-config.cursor_blink_ease_in = 'Constant'
-config.cursor_blink_ease_out = 'Constant'
-
-config.enable_kitty_keyboard = true
-
--- window appearance
-config.enable_scroll_bar = true
-config.window_padding = {
-  left = 0,
-  right = 0,
-  top = 0,
-  bottom = 0,
-}
--- config.initial_rows = 50;
-
---[[wezterm.on('gui-startup', function(cmd)
-  local tab, pane, window = mux.spawn_window(cmd or {})
-  -- Create a split occupying the right 1/3 of the screen
-  local loading_bar_pane = pane:split {
-     direction = 'Bottom',
-     size = 0.06,
-  }
-  -- go to JavaUtils-Directory and prepare command
-  loading_bar_pane:send_text 'cd JavaUtils/zeitlaeufer/target\njava de.szimnau.WorkLoadingBar'
-  -- optionally: clear before preparing command
-  -- loading_bar_pane:send_text 'cd JavaUtils/zeitlaeufer/target\nc\njava de.szimnau.WorkLoadingBar'
-end)]]
-
-config.keys = {
-  -- This will create a new horizontal split and run your default program inside it
-  {
-    key = 'E',
-    mods = 'CTRL|SHIFT',
-    action = act.SplitHorizontal { domain = 'CurrentPaneDomain' },
-  },
-  -- This will create a new vertical split and run your default program inside it
-  {
-    key = 'O',
-    mods = 'CTRL|SHIFT',
-    action = act.SplitVertical { domain = 'CurrentPaneDomain' },
-  },
-  -- resize the current split
-  {
-    key = 'UpArrow',
-    mods = 'CTRL|SHIFT',
-    action = act.AdjustPaneSize { 'Up', 1 },
-  },
-  {
-    key = 'DownArrow',
-    mods = 'CTRL|SHIFT',
-    action = act.AdjustPaneSize { 'Down', 1 },
-  },
-  { 
-    key = 'LeftArrow',
-    mods = 'CTRL|SHIFT',
-    action = act.AdjustPaneSize { 'Left', 1 } 
-  },
-  {
-    key = 'RightArrow',
-    mods = 'CTRL|SHIFT',
-    action = act.AdjustPaneSize { 'Right', 1 },
-  },
-  -- move around the splits
-  {
-    key = 'UpArrow',
-    mods = 'ALT',
-    action = act.ActivatePaneDirection 'Up',
-  },
-  {
-    key = 'DownArrow',
-    mods = 'ALT',
-    action = act.ActivatePaneDirection 'Down',
-  },
-  {
-    key = 'LeftArrow',
-    mods = 'ALT',
-    action = act.ActivatePaneDirection 'Left',
-  },
-  {
-    key = 'RightArrow',
-    mods = 'ALT',
-    action = act.ActivatePaneDirection 'Right',
-  },
-  -- makes pane take up all available space in the tab, hiding all other panes
-  {
-    key = 'X',
-    mods = 'CTRL|SHIFT',
-    action = wezterm.action.TogglePaneZoomState,
-  },
-}
-
-
--- and finally, return the configuration to wezterm
-return config
diff --git a/scripts/backup_edi.sh b/scripts/backup_edi.sh
index 42d8ee2..15242e6 100755
--- a/scripts/backup_edi.sh
+++ b/scripts/backup_edi.sh
@@ -36,6 +36,6 @@ if [[ $# > 0 && "$1" == "--noupload" ]]; then
    exit 0;
 fi
 
-sd rsync_backup -e "ssh -i /home/edi/.ssh/id_ed25519" --filter="P /home/docker" /sync/backup/ fabian@garrus:/citadel/backup/edi/
+sd rsync_backup -e "ssh -i /home/edi/.ssh/id_ed25519" /sync/backup/ fabian@garrus:/citadel/backup/edi/
 sd rsync_backup -e "ssh -i /home/edi/.ssh/id_ed25519" /home/edi/docker/ fabian@garrus:/citadel/backup/edi/home/docker/
 echo "Note: remember to keep /citadel in sync!"
diff --git a/scripts/backup_shepard.sh b/scripts/backup_shepard.sh
index f14eb87..e999ea4 100755
--- a/scripts/backup_shepard.sh
+++ b/scripts/backup_shepard.sh
@@ -20,7 +20,7 @@ backupDirectory $HOME/.ssh/ $BACKUP_DIR_HOME/.ssh/
 ### upload backup ###
 #####################
 
-if [[ "$1" == "--noupload" ]]; then
+if [[ $# > 0 && "$1" == "--noupload" ]]; then
    exit 0;
 fi
 
diff --git a/scripts/downContainers.sh b/scripts/downContainers.sh
index d316520..19cd1bc 100755
--- a/scripts/downContainers.sh
+++ b/scripts/downContainers.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 source /sync/scripts/dockerContainerAction.sh
 
 # FIXME!!! implement possibility to pass down directory
-upDownContainers down
+upDownContainers down $@
diff --git a/scripts/escapeFilenames.sh b/scripts/escapeFilenames.sh
index e41eb3e..d6e8e91 100755
--- a/scripts/escapeFilenames.sh
+++ b/scripts/escapeFilenames.sh
@@ -13,6 +13,7 @@ replacements['(']='_';
 replacements[')']='_';
 replacements['[']='_';
 replacements[']']='_';
+replacements[',']='_';
 while [[ $# > 0 ]]; do
    replacements["$1"]="$2";
    shift 2;
diff --git a/scripts/postTreatmentAudible.sh b/scripts/postTreatmentAudible.sh
new file mode 100755
index 0000000..db2c95b
--- /dev/null
+++ b/scripts/postTreatmentAudible.sh
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+/sync/scripts/escapeFilenames.sh . _
+for d in *; do
+   cd "$d";
+   /sync/scripts/escapeFilenames.sh Chapter Kapitel
+   /sync/scripts/reencode_m4a.sh -map;
+   rm *.m4a;
+   mv * "../${d}_reencode";
+   cd ..;
+   rmdir "$d"
+   mv "${d}_reencode" "$d";
+done
diff --git a/scripts/pullContainers.sh b/scripts/pullContainers.sh
index 1c43f63..f242957 100755
--- a/scripts/pullContainers.sh
+++ b/scripts/pullContainers.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 source /sync/scripts/dockerContainerAction.sh
 
 # FIXME!!! implement possibility to pass down directory
-upDownContainers pull
+upDownContainers pull $@
diff --git a/scripts/reencode_m4a.sh b/scripts/reencode_m4a.sh
index 8ddc742..cbe5726 100755
--- a/scripts/reencode_m4a.sh
+++ b/scripts/reencode_m4a.sh
@@ -6,15 +6,15 @@ map=
 vbr=
 while [[ $# > 0 ]]; do
    case $1 in
-      -map) map='-map 0:0';                          shift;;
-      -vbr) vbr='aac_at -profile:a aac_he -b:a 64k'; shift;;
+      -map) map='-map 0:a';                          shift;;
+      -vbr) vbr='aac -profile:a aac_he -b:a 64k';    shift;;
       *   )                                          break ;; # Anything else stops command line processing.
    esac
 done
 
 # if no variable bitrate, just copy audio
 if [[ -z $vbr ]]; then
-   map="$map copy"
+   vbr="copy"
 fi
 
 # ensure existence of destination folder
diff --git a/scripts/upContainers.sh b/scripts/upContainers.sh
index 69a59db..f7b73ae 100755
--- a/scripts/upContainers.sh
+++ b/scripts/upContainers.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 source /sync/scripts/dockerContainerAction.sh
 
 # FIXME!!! implement possibility to pass down directory
-upDownContainers up -d
+upDownContainers up -d $@