diff --git a/CHANGELOG.md b/CHANGELOG.md
index 66e0b1d..7e5aa15 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,15 +1,5 @@
 # Changelog Backuppy
 
-## [0.8] - 2021-05-07
-### Added
-- GUI-mode: Introduce "Browse"-button on directory-selection dialogs
-- GUI-mode: Installing necessary PySide2 package if not existing
-
-## [0.7] - 2021-05-06
-### Added
-- Reworked "install.sh" to call "install.py"
-- Launches graphical installer when called with "--gui" option: "install.sh --gui"
-
 ## [0.6] - 2021-05-06
 ### Added
 - Write alias to Backuppy.sh into .bashrc/.zshrc only if not already existing
diff --git a/README.md b/README.md
index 6ee459c..fae01e5 100644
--- a/README.md
+++ b/README.md
@@ -6,9 +6,9 @@ Name:           Backuppy
 
 Description:    Make daily backups with Backuppy to avoid losing your data.
 
-Installation:   execute `chmod +x install.sh && ./install.sh`
+Installation:   execute `chmod +x install.sh && .\install.sh`
 
-Install. GUI:   execute `chmod +x install.sh && ./install.sh  --gui`
+Install. GUI:   execute `chmod +x install.sh && .\install.sh  --gui`
 
 Usage:          execute `backuppy`
 
@@ -16,32 +16,32 @@ Author:         Joël Schurter
 
 Licence:        GPL3
 
-More infos:     See README.md and CHANGELOG.md
+More infos:     see constants and README.md
 
 # ToDo
 
 - add a log-file for the rsync errors
 
-- check user-input for validity
-
 # Dependencies
 - rsync (because Backuppy makes its backups with rsync)
 
-    execute `sudo pacman -S rsync` on Arch/Manjaro
-
     execute `sudo apt install rsync` on Debian/Ubuntu
-
-	execute `sudo dnf install rsync` on Fedora
-	
-	execute `sudo zypper install rsync` on openSUSE
+    
+    execute `sudo pacman -S rsync` on Arch/Manjaro
 
 # Dependencies for the graphical installer:
 - pip (the python package manager)
 
-	execute `sudo pacman -S pip` on Arch/Manjaro
-
     execute `sudo apt install python3-pip` on Debian/Ubuntu
+    
+    execute `sudo pacman -S pip` on Arch/Manjaro
+    
+- pip package 'PySide2'
 
-	execute `sudo dnf install pip` on Fedora
-	
-	execute `sudo zypper install python3-pip` on openSUSE
+    execute `pip3 install pyside2` on Debian/Ubuntu
+    
+    execute `pip install pyside2` on Arch/Manjaro
+
+# IMPORTANT
+
+You have to remove the "backuppy" alias in your .bashrc or .zshrc before reinstall Backuppy.
diff --git a/install.py b/install.py
index d6468be..a586b0b 100644
--- a/install.py
+++ b/install.py
@@ -1,187 +1,343 @@
 #!/usr/bin/env python3
 """
 project: Backuppy
-version: 0.8
+version: 0.6
 file: install.py
-summary: python installer-script in CLI-mode
+summary: main entry python file
 """
 
 # Standard library imports
-import sys
 import os
-import time
+
+# Third party imports
+from PySide2 import QtWidgets
 
 # local imports
 from languages import english
 from languages import german
 
 # local globals
-# ----------------------
-VERSION: str = "0.8"
-EMAIL = "fotocoder@joschu.ch"
-EXCLUDE_FILE = "exclude.txt"
-BACKUPPY_SCRIPT = "Backuppy.sh"
-# ----------------------
-MYDIR = os.getcwd()
-EXCLUDE: bool = False
-SHELL = os.environ.get("SHELL")
-HOME = os.environ.get("HOME")
-LANG_EN = "English"
-LANG_DE = "German"
-LANGUAGE = LANG_EN
+VERSION: str = "0.6"
+EMAIL: str = "fotocoder@joschu.ch"
+TARGET_SCRIPT: str = "Backuppy.sh"
+EXCLUDE_FILE: str = "exclude.txt"
+LANG_EN: str = "English"
+LANG_DE: str = "German"
+LANGUAGE: str = LANG_EN
+MYDIR: str = os.environ.get("mydir")
+if not MYDIR:
+    MYDIR = os.getcwd()
+SOURCEDIR: str = None
+EXCLUDE: bool = True
+TARGETDIR: str = None
 RSYNC_CMD: str = None
 
-def set_language(language):
-    global LANGUAGE
-    LANGUAGE = language
-
-def trace(message_txt):
-    """ Print a formatted message to std out. """
-    print("[  OK  ] " + message_txt)
-
 def get_lang_text(search_str: str):
-    global LANGUAGE
     """ Returns a string from the appropriate language file. """
     return_str: str = eval("english."  + search_str) 
+    global LANGUAGE
     if LANGUAGE == LANG_DE:
         return_str = eval("german."  + search_str)
     return return_str
 
-def main_install_cli():
-    language = input("Hello, first of all, which language do you prefer: German [DE] or English [EN]?\n> ")
-    if language.upper() == "DE":
-        set_language(LANG_DE)
-        print("Perfekt, nun ist das deutsche Sprachpaket aktiviert. Willkommen!\n")    
-    else:
-        print("Perfect, the English language package is now activated. Welcome!.\n")
+def trace(message_txt: str):
+    """ Print a formatted message to std out. """
+    print("[  OK  ]" + message_txt)
 
-    time.sleep(1)
+class BackuppyWizard(QtWidgets.QWizard):
+    def __init__(self, parent=None):
+        super().__init__(parent)
 
-    print("\n" + get_lang_text("intromsg1") + "\n")
-    time.sleep(1)
+        self.addPage(Page01(self))
+        self.addPage(Page02(self))
+        self.addPage(Page03(self))
+        self.addPage(Page04(self))
+        self.addPage(Page05(self))
+        self.addPage(Page06(self))
+        self.addPage(Page07(self))
+        self.addPage(Page08(self))
+        self.addPage(Page09(self))
+        self.addPage(Page10(self))
+        
+        self.setWindowTitle(english.intromsg1)
+        self.resize(640, 480)
 
-    print("\n" + get_lang_text("intromsg2") + "\n")
-    time.sleep(1)
+class Page01(QtWidgets.QWizardPage):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.label = QtWidgets.QLabel("Hello, first of all, which language do you prefer: English or German?")
+        # self.comboBox = QIComboBox(self)
+        self.comboBox = QtWidgets.QComboBox(self)
+        self.comboBox.addItem(LANG_EN, LANG_EN)
+        self.comboBox.addItem(LANG_DE, LANG_DE)
 
-    # which Rsync options are available and which one you want to use
-    print(get_lang_text("rsyncopt") + "\n")
-    time.sleep(1)
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(self.label)
+        layout.addWidget(self.comboBox)
+        self.setLayout(layout)
 
-    # asks if you want to exclude files/directories from backup and creates an exclude file in case of Yes
-    exclude = input(get_lang_text("excludefile1") + "\n> ")
-    global EXCLUDE
-    if exclude.upper() in ("J", "Y"):
-        EXCLUDE = True
-        print(get_lang_text("excludefile2") + "\n")
-    else:
-        EXCLUDE = False
-        print(get_lang_text("excludefile3") + "\n")
-    time.sleep(1)
+    def validatePage(self):
+        global LANGUAGE
+        if self.comboBox.currentText() == LANG_DE:
+            LANGUAGE = LANG_DE
+        else:
+            LANGUAGE = LANG_EN
+        return True
 
-    # Asks for the source directory which should be saved
-    print(get_lang_text("srcdir1"))
-    time.sleep(1)
-    sourcedir = input(get_lang_text("srcdir2") + "\n> ")
 
-    print(f"{get_lang_text('srcdir3_1')} {sourcedir} {get_lang_text('srcdir3_2')}")
-    time.sleep(1)
+class Page02(QtWidgets.QWizardPage):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.label1 = QtWidgets.QLabel()
+        self.label2 = QtWidgets.QLabel()
 
-    # asks for the destination directory in which the backup should be saved
-    targetdir = input(get_lang_text("targetdir1") + "\n> ")
-    print(f"{get_lang_text('targetdir2_1')} {targetdir} {get_lang_text('targetdir2_2')}")
-    time.sleep(1)
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(self.label1)
+        layout.addWidget(self.label2)
+        self.setLayout(layout)
 
-    # collects all the information needed to execute the rsync command and creates it.
-    print(get_lang_text("collect") + "\n")
-    time.sleep(1)
-    exclude_file = os.path.join(MYDIR, EXCLUDE_FILE)
-    
-    RSYNC_CMD = f"rsync -aqp --exclude-from={exclude_file} {sourcedir} {targetdir}"
+    def initializePage(self):
+        self.label1.setText(get_lang_text("languagepack"))
+        self.label2.setText(get_lang_text("intromsg2"))
 
-    print(f"{RSYNC_CMD}")
-    time.sleep(1)
 
-    # Outro
-    print(get_lang_text("outro1"))
-    time.sleep(2)
-    print(get_lang_text("outro2") + " " + EMAIL)
+class Page03(QtWidgets.QWizardPage):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.label = QtWidgets.QLabel()
+        self.groupbox = QtWidgets.QGroupBox()
+        self.groupbox.setFlat(True)
+        self.radio1 = QtWidgets.QRadioButton()
+        self.radio2 = QtWidgets.QRadioButton()
 
-    return True, EXCLUDE, RSYNC_CMD
+        vbox = QtWidgets.QVBoxLayout()
+        vbox.addWidget(self.radio1)
+        vbox.addWidget(self.radio2)    
+        vbox.addStretch(1)
+        self.groupbox.setLayout(vbox)
 
-def create_exclude_file(directory, exclude_file):
-    exclude_file = os.path.join(directory, exclude_file)
-    with open(exclude_file, "w") as fExclude:
-        trace(f"creating exclude-file '{exclude_file}'.")
-        fExclude.write("\n")
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(self.label)
+        layout.addWidget(self.groupbox)
+        self.setLayout(layout)
 
-def create_alias(shell, home_dir, directory, backuppy_script):
-    # alias entry in .bashrc or .zshrc
-    backuppy_script = os.path.join(directory, backuppy_script)
-    alias_str = f"alias backuppy='sudo {backuppy_script}'"
+    def initializePage(self):
+        self.label.setText(get_lang_text("excludefile1"))
+        self.radio1.setText(get_lang_text("Yes"))
+        self.radio2.setText(get_lang_text("No"))
+        self.radio1.setChecked(True)
 
+    def validatePage(self):
+        global EXCLUDE
+        if self.radio1.isChecked():
+            EXCLUDE = True
+        else:
+            EXCLUDE = False
+        return True
+
+class Page04(QtWidgets.QWizardPage):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.label = QtWidgets.QLabel()
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(self.label)
+        self.setLayout(layout)
+
+    def initializePage(self):
+        global EXCLUDE
+        if EXCLUDE:
+            self.label.setText(get_lang_text("excludefile2"))
+        else:
+            self.label.setText(get_lang_text("excludefile3"))
+
+class Page05(QtWidgets.QWizardPage):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.label1 = QtWidgets.QLabel()
+        self.label2 = QtWidgets.QLabel()
+        self.edit = QtWidgets.QLineEdit()
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(self.label1)
+        layout.addWidget(self.label2)
+        layout.addWidget(self.edit)
+        self.setLayout(layout)
+
+    def initializePage(self):
+        self.label1.setText(get_lang_text("srcdir1"))
+        self.label2.setText(get_lang_text("srcdir2"))
+
+    def validatePage(self):
+        global SOURCEDIR
+        SOURCEDIR = self.edit.text()
+
+        return True
+
+
+class Page06(QtWidgets.QWizardPage):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.label1 = QtWidgets.QLabel()
+        self.label2 = QtWidgets.QLabel()
+        self.label3 = QtWidgets.QLabel()
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(self.label1)
+        layout.addWidget(self.label2)
+        layout.addWidget(self.label3)
+        self.setLayout(layout)
+
+    def initializePage(self):
+        self.label1.setText(get_lang_text("srcdir3_1"))        
+        bold_text = f"<p><strong>{SOURCEDIR}</strong></p>" 
+        self.label2.setText(bold_text)
+        self.label3.setText(get_lang_text("srcdir3_2"))
+
+
+class Page07(QtWidgets.QWizardPage):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.label1 = QtWidgets.QLabel()
+        self.edit = QtWidgets.QLineEdit()
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(self.label1)
+        layout.addWidget(self.edit)
+        self.setLayout(layout)
+
+    def initializePage(self):
+        self.label1.setText(get_lang_text("targetdir1"))
+
+    def validatePage(self):
+        global TARGETDIR
+        TARGETDIR = self.edit.text()
+
+        return True
+
+
+class Page08(QtWidgets.QWizardPage):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.label1 = QtWidgets.QLabel()
+        self.label2 = QtWidgets.QLabel()
+        self.label3 = QtWidgets.QLabel()
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(self.label1)
+        layout.addWidget(self.label2)
+        layout.addWidget(self.label3)
+        self.setLayout(layout)
+
+    def initializePage(self):
+        self.label1.setText(get_lang_text("targetdir2_1"))
+        bold_text = f"<p><strong>{TARGETDIR}</strong></p>" 
+        self.label2.setText(bold_text)
+        self.label3.setText(get_lang_text("targetdir2_2"))
+
+    def validatePage(self):
+        global RSYNC_CMD, MYDIR, SOURCEDIR, TARGETDIR
+        RSYNC_CMD = f"rsync -aqp --exclude-from={MYDIR}/exclude.txt {SOURCEDIR} {TARGETDIR}"
+
+        return True
+
+
+class Page09(QtWidgets.QWizardPage):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.label1 = QtWidgets.QLabel()
+        self.label2 = QtWidgets.QLabel()
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(self.label1)
+        layout.addWidget(self.label2)
+        self.setLayout(layout)
+
+    def initializePage(self):
+        self.label1.setText(get_lang_text("collect"))
+        global RSYNC_CMD
+        #self.label2.setText(f"{RSYNC_CMD}")
+        bold_text = f"<p><strong>{RSYNC_CMD}</strong></p>" 
+        self.label2.setText(bold_text)
+
+
+class Page10(QtWidgets.QWizardPage):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.label1 = QtWidgets.QLabel()
+        self.label2 = QtWidgets.QLabel()
+        self.label3 = QtWidgets.QLabel()
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(self.label1)
+        layout.addWidget(self.label2)
+        layout.addWidget(self.label3)
+        self.setLayout(layout)
+        self.setFinalPage(True)
+
+    def initializePage(self):
+        self.label1.setText(get_lang_text("outro1"))
+        self.label2.setText(get_lang_text("outro2"))
+        urlLink = f"<a href='mailto: {EMAIL}'>{EMAIL}</a>" 
+        self.label3.setText(urlLink)
+        self.label3.setOpenExternalLinks(True)
+
+    def validatePage(self):
+        # create shell script with rsync command
+        create_shell_script(RSYNC_CMD)
+
+        return True
+
+
+def create_shell_script(command_str: str):
+    rc_filepath: str = None
+
+    global MYDIR, EXCLUDE, TARGET_SCRIPT
+
+    TARGET_SCRIPT = os.path.join(MYDIR, TARGET_SCRIPT)
+    ALIAS_STR = f"alias backuppy='sudo {TARGET_SCRIPT}'"
+    current_shell = os.environ.get("SHELL")
+    user_home = os.environ.get("HOME")
+
+    ## STEP 1: update shell config scripts with alias for backuppy
     # Check for installed ZSH
-    if shell.upper().find("ZSH") > 0:
-        rc_filepath = os.path.join(home_dir, ".zshrc")
+    if current_shell.upper().find("ZSH") > 0:
+        rc_filepath = os.path.join(user_home, ".zshrc")
+
     # Check for installed BASH
-    if shell.upper().find("BASH") > 0:
-        rc_filepath = os.path.join(home_dir, ".bashrc")
+    if current_shell.upper().find("BASH") > 0:
+        rc_filepath = os.path.join(user_home, ".bashrc")
+
     # Append our alias if not already existing
     if os.path.isfile(rc_filepath):
         fileRc = open(rc_filepath, "r")  # open file in read mode
+
         backuppy_entry_exists = False
-        for line in fileRc:
+        for line in fileRc:    
             if "alias backuppy=" in line:
                 backuppy_entry_exists = True
                 break
-        if not backuppy_entry_exists:
-            trace(f"Writing {alias_str} to config file '{rc_filepath}'.")
+
+        if not backuppy_entry_exists:    
+            trace(f"Writing {ALIAS_STR} to config file '{rc_filepath}'.")
             fileRc = open(rc_filepath, "a")  # open file in append mode
-            fileRc.write("\n# Following line was created by Backuppy\n" + alias_str + "\n")
+            fileRc.write("\n# Following line was created by Backuppy\n" + ALIAS_STR + "\n")
         fileRc.close()
 
-def create_backuppy_script(directory, backuppy_script, rsync_cmd):
-    # creates the file 'Backuppy.sh'
-    backuppy_file = os.path.join(directory, backuppy_script)
-    with open(backuppy_file, "w") as fBackuppy:
-        trace(f"creating backuppy-file '{backuppy_file}'.")
-        fBackuppy.write("#!/bin/bash\n" + rsync_cmd + "\n")
-    
-    os.chmod(backuppy_file, 0o777)  # make file executable
+    ## STEP 2: Create the exclude script if desired
+    if EXCLUDE:
+        global EXCLUDE_FILE
+        EXCLUDE_FILE = os.path.join(MYDIR, EXCLUDE_FILE)
+        with open(EXCLUDE_FILE, "w") as file2:
+            trace(f"creating exclude-file '{EXCLUDE_FILE}'.")
+            file2.writelines("\n")
 
-def do_the_install(is_exclude: bool, rsync_cmd: str):
-    """ Creates scripts and entries based on environment variables. """
+    ## STEP 3: enter the rsync command in Backuppy.sh
+    with open(TARGET_SCRIPT, "w") as file3:
+        trace(f"Writing rsync-command to file '{TARGET_SCRIPT}':\n         {command_str}")
+        file3.writelines("#!/bin/bash" + "\n")
+        file3.writelines(command_str + "\n")
 
-    if is_exclude:
-        create_exclude_file(MYDIR, EXCLUDE_FILE)
-
-    if rsync_cmd:
-        create_backuppy_script(MYDIR, BACKUPPY_SCRIPT, rsync_cmd)
-        create_alias(SHELL, HOME, MYDIR, BACKUPPY_SCRIPT)
-
-def main(argv):
-    trace(f"Starting Backuppy install.py v{VERSION}")
-    is_finalized = False
-
-    if argv and argv[0] == "--gui":
-        from install_gui import main_install_gui
-        trace("Starting GUI-version.")
-        is_finalized, is_exclude, rsync_cmd = main_install_gui()  # collect user input via GUI and store in env. variables
-
-    else:
-        trace("Starting CLI-version.\n")
-        is_finalized, is_exclude, rsync_cmd = main_install_cli()  # collect user input via CLI and store in env. variables
-        if is_finalized:
-            print("CLI finalized.")
-        if is_exclude:
-            print("exclude is true.")
-        if rsync_cmd:
-            print("rsync command returned: " + rsync_cmd)
-
-    if is_finalized:
-        do_the_install(is_exclude, rsync_cmd)
-
-    trace("Ending Backuppy install.py")
 
 if __name__ == '__main__':
-    # sys.argv.append("--gui")  # TODO: disable for production
-    sys.exit(main(sys.argv[1:]))
+    trace(f"Starting Backuppy install.py v{VERSION}")
+    app = QtWidgets.QApplication()
+    wizard = BackuppyWizard()
+    wizard.show()
+
+    app.exec_()
+
+    trace("Ending Backuppy install.py")
diff --git a/install.sh b/install.sh
index f1e9ffd..ba8f1da 100755
--- a/install.sh
+++ b/install.sh
@@ -1,29 +1,107 @@
 #!/bin/bash
-# """
-# project: Backuppy
-# version: 0.8
-# file: install.sh
-# summary: main entry shell script
-# """
+
+# Variables
+mydir=$PWD
+langDE="./languages/german.py"
+langEN="./languages/english.py"
 
 # Check if graphical installer should be executed
 if [ "$1" == "--gui" ]; then
-    # Check if PIP ist installed
-    if ! command -v pip3> /dev/null
-    then
-        echo "Please install PIP on your system for the graphical version of Backuppy!"
-        exit
-    fi
-    # Check if PIP module "PySide2" is installed
-    if ! pip list | grep PySide2> /dev/null
-    then
-      # Install PySide2
-      echo -e "Installing necessary PySide2 package for GUI-mode."
-      pip3 install PySide2
-    fi
-    # Launch python installer in GUI mode
-    python3 -B install.py "$1"
-else
-    # Launch python installer in CLI mode
     python3 -B install.py
+    exit 0
+else
+    # Intro
+    # language
+    echo -e "Hello, first of all, which language do you prefer: German [DE] or English [EN]?"
+    read language
+    if [ $language = "DE" ]; then
+        echo -e "Perfekt, nun ist das deutsche Sprachpaket aktiviert. Willkommen! \n"
+        . $langDE
+        sleep 1
+    fi
+    if [ $language = "EN" ]; then
+        echo -e "Perfect, the English language package is now activated. Welcome!. \n"
+        . $langEN
+        sleep 1
+    fi
+
+    echo -e "\n$intromsg1 \n"
+    sleep 1
+    echo -e " \n$intromsg2\n"
+    sleep 1
+    # Installer
+
+    # creates the file 'Backuppy.sh'
+    touch Backuppy.sh
+    echo "#!/bin/bash" >> Backuppy.sh
+    chmod +x Backuppy.sh
+    # which Rsync options are available and which one you want to use
+    echo -e "$rsyncopt \n"
+    sleep 1
+
+    # asks if you want to exclude files/directories from backup and creates an exclude file in case of Yes
+    echo -e "$excludefile1"
+    read exclude
+    if [ $exclude = "J" ]; then
+        echo -e "$excludefile2 \n"
+        touch exclude.txt
+        sleep 1
+    elif [ $exclude = "Y" ]; then
+        echo -e "$excludefile2 \n"
+        touch exclude.txt
+        sleep 1
+    fi
+    if [ $exclude = "N" ]; then
+        echo -e "$excludefile3 \n"
+        sleep 1
+    fi
+
+    # Asks for the source directory which should be saved
+    echo -e "$srcdir1"
+    sleep 1
+    echo -e "$srcdir2"
+    read sourcedir
+    echo -e "$srcdir3_1 $sourcedir $srcdir3_2"
+    sleep 1
+
+    # asks for the destination directory in which the backup should be saved
+    echo -e "$targetdir1"
+    read targetdir
+    echo -e "$targetdir2_1 $targetdir $targetdir2_2"
+    sleep 1
+
+    # alias entry in .bashrc or .zshrc
+    # .zshrc case 1
+    echo $SHELL
+    if [ $SHELL = "/usr/bin/zsh" ]; then
+        echo "alias backuppy='sudo $mydir/Backuppy.sh'" >> ~/.zshrc
+    fi
+    # zshrc case 2
+    echo $SHELL
+    if [ $SHELL = "/bin/zsh" ]; then
+        echo "alias backuppy='sudo $mydir/Backuppy.sh'" >> ~/.zshrc
+    fi
+    #bashrc case 1
+    if [ $SHELL = "/usr/bin/bash" ]; then
+        echo "alias backuppy='sudo $mydir/Backuppy.sh'" >> ~/.bashrc
+    fi
+    # bashrc case 2
+    if [ $SHELL = "/bin/bash" ]; then
+        echo "alias backuppy='sudo $mydir/Backuppy.sh'" >> ~/.bashrc
+    fi
+
+    # collects all the information needed to execute the rsync command and creates it.
+    echo -e "$collect \n"
+    sleep 1
+    echo -e "rsync -aqp --exclude-from=$mydir/exclude.txt $sourcedir $targetdir \n"
+    sleep 1
+
+    # enter the rsync command in Backuppy.sh
+    echo "rsync -aqp --exclude-from=$mydir/exclude.txt $sourcedir $targetdir" >> Backuppy.sh
+
+    # Outro
+    echo -e "$outro1"
+    sleep 2
+    echo "$outro2"
+    exit 0
 fi
diff --git a/install_cli.py b/install_cli.py
new file mode 100644
index 0000000..c3215e3
--- /dev/null
+++ b/install_cli.py
@@ -0,0 +1,95 @@
+#!/usr/bin/env python3
+
+# Dependencies
+import os
+import time
+
+# Variables
+MYDIR = os.getcwd()
+SHELL = os.environ.get("SHELL")
+HOME = os.environ.get("HOME")
+
+# Intro
+# language
+
+language = input("Hello, first of all, which language do you prefer: German [DE] or English [EN]?\n> ")
+if language.upper() == "DE":
+    from languages.german import *
+    print("Perfekt, nun ist das deutsche Sprachpaket aktiviert. Willkommen!\n")    
+else:
+    from languages.english import *
+    print("Perfect, the English language package is now activated. Welcome!.\n")
+
+time.sleep(1)
+
+print("\n" + intromsg1 + "\n")
+time.sleep(1)
+
+print("\n" + intromsg2 + "\n")
+time.sleep(1)
+
+# Installer
+
+# creates the file 'Backuppy.sh'
+fBackuppy = open("Backuppy.sh", "w") 
+fBackuppy.write("#!/bin/bash")
+os.chmod("Backuppy.sh", 0o777)  # make file executable
+
+# which Rsync options are available and which one you want to use
+print(rsyncopt + "\n")
+time.sleep(1)
+
+# asks if you want to exclude files/directories from backup and creates an exclude file in case of Yes
+exclude = input(excludefile1 + "\n> ")
+if exclude.upper() in ("J", "Y"):
+    print(excludefile2 + "\n")
+    fExclude = open("exclude.txt", "w")
+    fExclude.close()
+else:
+    print(excludefile3 + "\n")
+time.sleep(1)
+
+# Asks for the source directory which should be saved
+print(srcdir1)
+time.sleep(1)
+sourcedir = input(srcdir2 + "\n> ")
+
+print(f"{srcdir3_1} {sourcedir} {srcdir3_2}")
+time.sleep(1)
+
+# asks for the destination directory in which the backup should be saved
+targetdir = input(targetdir1 + "\n> ")
+print(f"{targetdir2_1} {targetdir} {targetdir2_2}")
+time.sleep(1)
+
+# alias entry in .bashrc or .zshrc
+print(SHELL)
+
+# .zshrc case1 and case2
+if SHELL.upper().find("ZSH") >0:
+    # Appending to bash config file
+    fRc = open(os.path.join(HOME, ".zshrc"), "a")  # append mode
+    fRc.write("\n" + f"alias backuppy='sudo {MYDIR}/Backuppy.sh'" + "\n")
+    fRc.close()
+
+# .bashrc case1 and case2
+elif SHELL.upper().find("BASH") >0:
+    # Appending to zsh config file
+    fRc = open(os.path.join(HOME, ".bashrc"), "a")  # append mode
+    fRc.write("\n" + f"alias backuppy='sudo {MYDIR}/Backuppy.sh'" + "\n")
+    fRc.close()
+
+# collects all the information needed to execute the rsync command and creates it.
+print(collect + "\n")
+time.sleep(1)
+print(f"rsync -aqp --exclude-from={MYDIR}/exclude.txt {sourcedir} {targetdir}\n")
+time.sleep(1)
+
+# enter the rsync command in Backuppy.sh
+fBackuppy.write("\n" + f"rsync -aqp --exclude-from={MYDIR}/exclude.txt {sourcedir} {targetdir}" + "\n")
+fBackuppy.close()
+
+# Outro
+print(outro1)
+time.sleep(2)
+print(outro2 + " fotocoder@joschu.ch")
diff --git a/install_gui.py b/install_gui.py
deleted file mode 100644
index 6a3dfae..0000000
--- a/install_gui.py
+++ /dev/null
@@ -1,295 +0,0 @@
-#!/usr/bin/env python3
-"""
-project: Backuppy
-version: 0.8
-file: install_gui.py
-summary: python installer-script in GUI-mode (needs PySide2)
-"""
-
-# Standard library imports
-import os
-
-# Third party imports
-from PySide2 import QtWidgets
-
-# local imports
-from install import *
-
-class BackuppyWizard(QtWidgets.QWizard):
-    def __init__(self, parent=None):
-        super().__init__(parent)
-
-        self.setWindowTitle(get_lang_text("intromsg1"))
-
-        self.addPage(Page01(self))
-        self.addPage(Page02(self))
-        self.addPage(Page03(self))
-        self.addPage(Page04(self))
-        self.addPage(Page05(self))
-        self.addPage(Page06(self))
-        self.addPage(Page07(self))
-        self.addPage(Page08(self))
-        self.addPage(Page09(self))
-        self.addPage(Page10(self))
-
-        self.resize(640, 480)
-
-
-class Page01(QtWidgets.QWizardPage):
-    def __init__(self, parent=None):
-        super().__init__(parent)
-        self.label = QtWidgets.QLabel("Hello, first of all, which language do you prefer: English or German?")
-
-        self.comboBox = QtWidgets.QComboBox(self)
-        self.comboBox.addItem(LANG_EN, LANG_EN)
-        self.comboBox.addItem(LANG_DE, LANG_DE)
-
-        layout = QtWidgets.QVBoxLayout()
-        layout.addWidget(self.label)
-        layout.addWidget(self.comboBox)
-        self.setLayout(layout)
-
-    def validatePage(self):
-        if self.comboBox.currentText() == LANG_DE:
-            set_language(LANG_DE)
-
-        return True
-
-
-class Page02(QtWidgets.QWizardPage):
-    def __init__(self, parent=None):
-        super().__init__(parent)
-        self.label1 = QtWidgets.QLabel()
-        self.label2 = QtWidgets.QLabel()
-
-        layout = QtWidgets.QVBoxLayout()
-        layout.addWidget(self.label1)
-        layout.addWidget(self.label2)
-        self.setLayout(layout)
-
-    def initializePage(self):
-        self.setWindowTitle(get_lang_text("intromsg1"))
-
-        self.label1.setText(get_lang_text("languagepack"))
-        self.label2.setText(get_lang_text("intromsg2"))
-
-
-class Page03(QtWidgets.QWizardPage):
-    def __init__(self, parent=None):
-        super().__init__(parent)
-        self.label = QtWidgets.QLabel()
-        self.groupbox = QtWidgets.QGroupBox()
-        self.groupbox.setFlat(True)
-        self.radio1 = QtWidgets.QRadioButton()
-        self.radio2 = QtWidgets.QRadioButton()
-
-        vbox = QtWidgets.QVBoxLayout()
-        vbox.addWidget(self.radio1)
-        vbox.addWidget(self.radio2)    
-        vbox.addStretch(1)
-        self.groupbox.setLayout(vbox)
-
-        layout = QtWidgets.QVBoxLayout()
-        layout.addWidget(self.label)
-        layout.addWidget(self.groupbox)
-        self.setLayout(layout)
-
-    def initializePage(self):
-        self.label.setText(get_lang_text("excludefile1"))
-        self.radio1.setText(get_lang_text("Yes"))
-        self.radio2.setText(get_lang_text("No"))
-        self.radio1.setChecked(True)
-
-    def validatePage(self):
-        global EXCLUDE
-        if self.radio1.isChecked():
-            EXCLUDE = True
-        else:
-            EXCLUDE = False
-        return True
-
-
-class Page04(QtWidgets.QWizardPage):
-    def __init__(self, parent=None):
-        super().__init__(parent)
-        self.label = QtWidgets.QLabel()
-        layout = QtWidgets.QVBoxLayout()
-        layout.addWidget(self.label)
-        self.setLayout(layout)
-
-    def initializePage(self):
-        global EXCLUDE
-        if EXCLUDE:
-            self.label.setText(get_lang_text("excludefile2"))
-        else:
-            self.label.setText(get_lang_text("excludefile3"))
-
-class Page05(QtWidgets.QWizardPage):
-    def __init__(self, parent=None):
-        super().__init__(parent)
-        self.label1 = QtWidgets.QLabel()
-        self.label2 = QtWidgets.QLabel()
-        self.efSourceDir = QtWidgets.QLineEdit()
-        self.pbBrowse = QtWidgets.QPushButton("Browse")
-        self.pbBrowse.clicked.connect(self.on_pbBrowse_clicked)
-        layout = QtWidgets.QVBoxLayout()
-        layout.addWidget(self.label1)
-        layout.addWidget(self.label2)
-
-        hLayout = QtWidgets.QHBoxLayout()
-        hLayout.addWidget(self.efSourceDir)
-        hLayout.addWidget(self.pbBrowse)
-
-        layout.addLayout(hLayout)
-
-        self.setLayout(layout)
-
-    def initializePage(self):
-        self.label1.setText(get_lang_text("srcdir1"))
-        self.label2.setText(get_lang_text("srcdir2"))
-
-    def on_pbBrowse_clicked(self):
-        options = QtWidgets.QFileDialog.Options() | QtWidgets.QFileDialog.ShowDirsOnly
-        dirName = QtWidgets.QFileDialog.getExistingDirectory(self, "Select Directory", None, options)
-        self.efSourceDir.setText(dirName)
-
-    def validatePage(self):
-        global SOURCEDIR
-        SOURCEDIR = self.efSourceDir.text()
-
-        return True
-
-
-class Page06(QtWidgets.QWizardPage):
-    def __init__(self, parent=None):
-        super().__init__(parent)
-        self.label1 = QtWidgets.QLabel()
-        self.label2 = QtWidgets.QLabel()
-        self.label3 = QtWidgets.QLabel()
-        layout = QtWidgets.QVBoxLayout()
-        layout.addWidget(self.label1)
-        layout.addWidget(self.label2)
-        layout.addWidget(self.label3)
-        self.setLayout(layout)
-
-    def initializePage(self):
-        self.label1.setText(get_lang_text("srcdir3_1"))
-        bold_text = f"<p><strong>{SOURCEDIR}</strong></p>" 
-        self.label2.setText(bold_text)
-        self.label3.setText(get_lang_text("srcdir3_2"))
-
-
-class Page07(QtWidgets.QWizardPage):
-    def __init__(self, parent=None):
-        super().__init__(parent)
-        self.label1 = QtWidgets.QLabel()
-        self.efTargetDir = QtWidgets.QLineEdit()
-        self.pbBrowse = QtWidgets.QPushButton("Browse")
-        self.pbBrowse.clicked.connect(self.on_pbBrowse_clicked)
-        layout = QtWidgets.QVBoxLayout()
-        layout.addWidget(self.label1)
-
-        hLayout = QtWidgets.QHBoxLayout()
-        hLayout.addWidget(self.efTargetDir)
-        hLayout.addWidget(self.pbBrowse)
-
-        layout.addLayout(hLayout)
-
-        self.setLayout(layout)
-
-    def initializePage(self):
-        self.label1.setText(get_lang_text("targetdir1"))
-
-    def on_pbBrowse_clicked(self):
-        options = QtWidgets.QFileDialog.Options() | QtWidgets.QFileDialog.ShowDirsOnly
-        dirName = QtWidgets.QFileDialog.getExistingDirectory(self, "Select Directory", None, options)
-        self.efTargetDir.setText(dirName)
-
-    def validatePage(self):
-        global TARGETDIR
-        TARGETDIR = self.efTargetDir.text()
-
-        return True
-
-
-class Page08(QtWidgets.QWizardPage):
-    def __init__(self, parent=None):
-        super().__init__(parent)
-        self.label1 = QtWidgets.QLabel()
-        self.label2 = QtWidgets.QLabel()
-        self.label3 = QtWidgets.QLabel()
-        layout = QtWidgets.QVBoxLayout()
-        layout.addWidget(self.label1)
-        layout.addWidget(self.label2)
-        layout.addWidget(self.label3)
-        self.setLayout(layout)
-
-    def initializePage(self):
-        self.label1.setText(get_lang_text("targetdir2_1"))
-        bold_text = f"<p><strong>{TARGETDIR}</strong></p>" 
-        self.label2.setText(bold_text)
-        self.label3.setText(get_lang_text("targetdir2_2"))
-
-    def validatePage(self):
-        global RSYNC_CMD, MYDIR, SOURCEDIR, TARGETDIR
-        exclude_file = os.path.join(MYDIR, EXCLUDE_FILE)
-
-        RSYNC_CMD = f"rsync -aqp --exclude-from={exclude_file} {SOURCEDIR} {TARGETDIR}"
-
-        return True
-
-
-class Page09(QtWidgets.QWizardPage):
-    def __init__(self, parent=None):
-        super().__init__(parent)
-        self.label1 = QtWidgets.QLabel()
-        self.label2 = QtWidgets.QLabel()
-        layout = QtWidgets.QVBoxLayout()
-        layout.addWidget(self.label1)
-        layout.addWidget(self.label2)
-        self.setLayout(layout)
-
-    def initializePage(self):
-        self.label1.setText(get_lang_text("collect"))
-        global RSYNC_CMD
-        #self.label2.setText(f"{RSYNC_CMD}")
-        bold_text = f"<p><strong>{RSYNC_CMD}</strong></p>" 
-        self.label2.setText(bold_text)
-
-
-class Page10(QtWidgets.QWizardPage):
-    def __init__(self, parent=None):
-        super().__init__(parent)
-        self.label1 = QtWidgets.QLabel()
-        self.label2 = QtWidgets.QLabel()
-        self.label3 = QtWidgets.QLabel()
-        layout = QtWidgets.QVBoxLayout()
-        layout.addWidget(self.label1)
-        layout.addWidget(self.label2)
-        layout.addWidget(self.label3)
-        self.setLayout(layout)
-
-        self.setFinalPage(True)
-
-    def initializePage(self):
-        self.label1.setText(get_lang_text("outro1"))
-        self.label2.setText(get_lang_text("outro2"))
-        urlLink = f"<a href='mailto: {EMAIL}'>{EMAIL}</a>" 
-        self.label3.setText(urlLink)
-        self.label3.setOpenExternalLinks(True)
-
-    def validatePage(self):
-        return True
-
-
-def main_install_gui():
-    app = QtWidgets.QApplication()
-    wizard = BackuppyWizard()
-    wizard.show()
-
-    app.exec_()
-
-    return True, EXCLUDE, RSYNC_CMD
-
-if __name__ == '__main__':
-    is_finalized, is_exclude, rsync_cmd = main_install_gui()