Bash Script to Parallel Extract LibreOffice on Linux

#!/bin/bash

# Summary : Bash script to parallel extract versions of LibreOffice on Linux
# Version : 0.6.1 [2017-06-11]
# Author  : Yousuf Philips
# Wiki    : https://wiki.documentfoundation.org/Installing_in_parallel/Linux
# -----------------------
# This bash script can be run within the console or in a gui file manager

if [ ! -d "readmes" ]; then
   echo "This script must be run within the main extraction folder of the .tar.gz, which should contain a 'readmes' folder, as well as either a 'DEBS' or 'RPMS' folder in it."
   exit
fi

mkdir installs
cd installs

if [ -d '../DEBS' ]; then
   echo "Installing DEB Packages"
   for i in ../DEBS/*.deb; do dpkg-deb -x $i . ; done
   #rm ../DEBS/*.deb
else
   echo "Installing RPM Packages"
   for i in ../RPMS/*.rpm; do rpm2cpio $i | cpio -id; done
   rm ../RPMS/*.rpm
fi

cd ..

if [ -d 'installs/opt/libreoffice' ]; then
   echo 'Patching bootstraprc: Success [LibO 3.3]'
   chmod 644 installs/opt/libreoffice/program/bootstraprc
   sed -i 's/.libreoffice\/3/libreoffice\/3_3/g' installs/opt/libreoffice/program/bootstraprc
   ln -s installs/opt/libreoffice/program/soffice LibO\ 3_3

elif [ -d 'installs/opt/libreoffice3.5' ]; then
   echo 'Patching bootstraprc: Success [LibO 3.5]'
   sed -i '$s/$/_5/' installs/opt/libreoffice3.5/program/bootstraprc
   ln -s installs/opt/libreoffice3.5/program/soffice LibO\ 3_5

elif [ -d 'installs/opt/libreoffice3.6' ]; then
   echo 'Patching bootstraprc: Success [LibO 3.6]'
   sed -i '$s/$/_6/' installs/opt/libreoffice3.6/program/bootstraprc
   ln -s installs/opt/libreoffice3.6/program/soffice LibO\ 3_6

elif [ -d 'installs/opt/libreoffice4.0' ]; then
   echo 'Patching bootstraprc: Success'
   sed -i '$s/$/_0/' installs/opt/libreoffice4.0/program/bootstraprc

elif [ -d 'installs/opt/libreoffice4.1' ]; then
   echo 'Patching bootstraprc: Success'
   sed -i '$s/$/_1/' installs/opt/libreoffice4.1/program/bootstraprc

elif [ -d 'installs/opt/libreoffice4.2' ]; then
   echo 'Patching bootstraprc: Success'
   sed -i '$s/$/_2/' installs/opt/libreoffice4.2/program/bootstraprc

elif [ -d 'installs/opt/libreoffice4.3' ]; then
   echo 'Patching bootstraprc: Success'
   sed -i '$s/$/_3/' installs/opt/libreoffice4.3/program/bootstraprc

elif [ -d 'installs/opt/libreoffice4.4' ]; then
   echo 'Patching bootstraprc: Success [LibO 4.4]'
   sed -i '$s/$/_4/' installs/opt/libreoffice4.4/program/bootstraprc

elif [ -d 'installs/opt/libreoffice5.0' ]; then
   echo 'Patching bootstraprc: Success [LibO 5.0]'
   sed -i '$s/$/_5_0/' installs/opt/libreoffice5.0/program/bootstraprc

elif [ -d 'installs/opt/libreoffice5.1' ]; then
   echo 'Patching bootstraprc: Success [LibO 5.1]'
   sed -i '$s/$/_5_1/' installs/opt/libreoffice5.1/program/bootstraprc

elif [ -d 'installs/opt/libreoffice5.2' ]; then
   echo 'Patching bootstraprc: Success [LibO 5.2]'
   sed -i '$s/$/_5_2/' installs/opt/libreoffice5.2/program/bootstraprc

elif [ -d 'installs/opt/libreoffice5.3' ]; then
   echo 'Patching bootstraprc: Success [LibO 5.3]'
   sed -i '$s/$/_5_3/' installs/opt/libreoffice5.3/program/bootstraprc

elif [ -d 'installs/opt/libreoffice5.4' ]; then
   echo 'Patching bootstraprc: Success [LibO 5.4]'
   sed -i '$s/$/_5_4/' installs/opt/libreoffice5.4/program/bootstraprc

elif [ -d 'installs/opt/libreoffice5.5' ]; then
   echo 'Patching bootstraprc: Success [LibO 5.5]'
   sed -i '$s/$/_5_5/' installs/opt/libreoffice5.5/program/bootstraprc

# Development Releases

elif [ -d 'installs/opt/libreofficedev5.3' ]; then
   echo 'Patching bootstraprc: Success'
   sed -i '$s/$/_5_3/' installs/opt/libreofficedev5.3/program/bootstraprc

elif [ -d 'installs/opt/libreofficedev5.4' ]; then
   echo 'Patching bootstraprc: Success'
   sed -i '$s/$/_5_4/' installs/opt/libreofficedev5.4/program/bootstraprc

elif [ -d 'installs/opt/libreofficedev5.5' ]; then
   echo 'Patching bootstraprc: Success'
   sed -i '$s/$/_5_5/' installs/opt/libreofficedev5.5/program/bootstraprc

else
   echo 'Patching bootstraprc: Fail'

fi

if hash zenity 2>/dev/null; then
   zenity --info --text="Installation Complete"
else
   echo "Installation Complete"
fi