diff --git a/.gitignore b/.gitignore
old mode 100644
new mode 100755
diff --git a/install-debian.sh b/install-debian.sh
index 8c9c549..4ecf7b9 100755
--- a/install-debian.sh
+++ b/install-debian.sh
@@ -6,6 +6,43 @@
 # Permission to copy and modify is granted under the MIT license
 # Last revised 28.04.2018
 
+script=/tmp/install-script
+cat > $script << 'EOL'
+# configure vim
+configure-vim() {
+    touch ~/.vimrc
+    for config in "filetype plugin indent on" "set tabstop=4" "set shiftwidth=4" \
+                  "set expandtab" "syntax enable" "set softtabstop=4" \
+                  "set number" "set showcmd" "set cursorline"; do
+        grep "$config" ~/.vimrc || echo "$config" >> ~/.vimrc
+    done
+}
+
+# install fzf
+install-fzf() {
+    [ ! -d ~/.fzf ]&& cd ~ && git clone --depth 1 https://github.com/junegunn/fzf.git ~/.fzf && ~/.fzf/install
+}
+
+# install oh-my-zsh
+install-ohmyzsh() {
+    [ ! -d ~/.oh-my-zsh ] && (
+        sh -c "$(wget https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh -O -)"
+
+        # configure oh-my-zsh
+        grep 'ZSH_THEME="agnoster"' ~/.zshrc || sed -i -- 's/ZSH_THEME=".*"/ZSH_THEME="agnoster"/g' ~/.zshrc
+        grep "command-not-found" ~/.zshrc || sed -i -- '/^plugins=(/a \\  command-not-found\n  common-aliases\n  sudo\n  systemd\n  tmux\n  ubuntu' ~/.zshrc
+
+        # configure tmux on normal user
+        if [[ $EUID -ne 0 ]]; then
+            grep "ZSH_TMUX_AUTOSTART" ~/.zshrc || sed -i -- '1s/^/ZSH_TMUX_AUTOSTART="true"\nZSH_TMUX_AUTOQUIT="false"\n\n/' ~/.zshrc
+        fi
+    )
+}
+
+$@
+EOL
+chmod +x $script
+
 # check if root
 if [[ $EUID -ne 0 ]]; then
     echo "This script must be run as root" 1>&2
@@ -23,61 +60,30 @@ apt-get update -y
 apt-get dist-upgrade -y
 apt-get autoclean -y
 
-# get users directory and usernames
-root_user=$(grep ':0:' /etc/passwd | awk -F':' '{print $1}')
-root_user_path=$(grep ':0:' /etc/passwd | awk -F':' '{print $6}')
-default_user_path=$(egrep '\:100[0-9]\:' /etc/passwd | tail -n 1 | awk -F':' '{print $6}')
-default_user=$(egrep '\:100[0-9]\:' /etc/passwd | tail -n 1 | awk -F':' '{print $1}')
-
 # install default packages
-apt-get install -y sudo mc tree pv vim bash-completion wget git htop iotop iftop nmon apt-file aptitude hexedit tmux \
-                   fonts-powerline
+apt-get install -y fonts-powerline python-pip zsh sudo mc tree pv vim bash-completion wget git htop iotop iftop nmon apt-file aptitude hexedit tmux
 pip install git+https://github.com/jeffkaufman/icdiff.git
 
-# install zsh shell
-apt-get install -y zsh && (
-    chsh -s /bin/zsh ${root_user}
-    chsh -s /bin/zsh $[default_user]
-)
+# get users
+menu=(); while IFS=: read -r name pw uid gid gecos home shell; do if (( uid >= 1000 && uid < 10000 )); then menu+=( "$name" "$uid" on ); fi; done < /etc/passwd
+users=$(dialog --checklist "Install this on User" 0 0 4 root "0" on "${menu[@]}" 3>&1 1>&2 2>&3)
 
-# install oh-my-zsh
-( [ ! -d ${root_user_path}/.oh-my-zsh ] || [ ! -d ${default_user_path}/.oh-my-zsh ] ) && (
-    sh -c "$(wget https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh -O -)"
-    
-    # configure oh-my-zsh
-    grep 'ZSH_THEME="agnoster"' ${root_user_path}/.zshrc || sed -i -- 's/ZSH_THEME=".*"/ZSH_THEME="agnoster"/g' ${root_user_path}/.zshrc
-    grep "command-not-found" ${root_user_path}/.zshrc || sed -i -- '/^plugins=(/a \\  command-not-found\n  common-aliases\n  sudo\n  systemd\n  tmux\n  ubuntu' ${root_user_path}/.zshrc
-   
-    # install oh-my-zsh to default user
-    cp -f ${root_user_path}/.zshrc ${default_user_path}/.zshrc
-    cp -a ${root_user_path}/.oh-my-zsh ${default_user_path}/.oh-my-zsh
-    chown -R ${default_user}:${default_user} ${default_user_path}/.oh-my-zsh ${default_user_path}/.zshrc
-    sed -i -- '/Path to your oh-my-zsh installation/!b;n;c\  export ZSH='"${default_user_path}"'/.oh-my-zsh' ${default_user_path}/.zshrc
-    
-    # configure tmux
-    grep "ZSH_TMUX_AUTOSTART" ${default_user_path}/.zshrc || sed -i -- '1s/^/ZSH_TMUX_AUTOSTART="true"\nZSH_TMUX_AUTOQUIT="false"\n\n/' ${default_user_path}/.zshrc
-)
+# for each user install packages
+for user in $users; do
+    # install zsh shell
+    chsh -s /bin/zsh $user
 
-# install fzf
-install_fzf='cd ~ && git clone --depth 1 https://github.com/junegunn/fzf.git ~/.fzf && ~/.fzf/install'
-[ ! -d ${root_user_path}/.fzf ] && su -c ${install_fzf} -s /bin/bash ${root_user}
-[ ! -d ${default_user_path}/.fzf ] && su -c ${install_fzf} -s /bin/bash ${default_user}
-
-# configure vim
-touch ${root_user_path}/.vimrc ${default_user_path}/.vimrc
-for config in "filetype plugin indent on" "set tabstop=4" "set shiftwidth=4" \
-              "set expandtab" "syntax enable" "set softtabstop=4" \
-              "set number" "set showcmd" "set cursorline"; do
-    grep "${config}" ${root_user_path}/.vimrc || echo "${config}" >> ${root_user_path}/.vimrc
-    grep "${config}" ${default_user_path}/.vimrc || echo "${config}" >> ${default_user_path}/.vimrc
+    # run install and configuration scripts
+    for target in install-ohmyzsh install-fzf configure-vim; do
+        su -c "$script $target" -s /bin/bash $user
+    done
 done
-chown ${default_user}:${default_user} ${default_user_path}/.vimrc
 
 # configure tmux
 for config in "bind '\"' split-window -c \"#{pane_current_path}\"" \
               "bind % split-window -h -c \"#{pane_current_path}\"" \
               "bind c new-window -c \"#{pane_current_path}\""; do
-    grep "${config}" /etc/tmux.conf || echo "${config}" >> /etc/tmux.conf
+    grep "$config" /etc/tmux.conf || echo "$config" >> /etc/tmux.conf
 done
 
 # configure system
@@ -89,3 +95,6 @@ dpkg-reconfigure console-data console-setup locales \
 # run programs
 apt-file update
 sensors-detect --auto
+
+# delete temporary script file
+rm -f $script