diff --git a/install_orbit_environment.sh b/install_orbit_environment.sh
index 310420c..932d04b 100644
--- a/install_orbit_environment.sh
+++ b/install_orbit_environment.sh
@@ -84,7 +84,8 @@ else
 fi
 # build ImageMagick and install
 if [ -z $(which convert) ]; then
-	sudo bash -l -c "tmp_pwd=$(pwd) && cd /root && \
+	tmp_pwd="$(pwd)"
+	sudo bash -l -c "cd /root && \
 	apt-get install libjpeg62 -y && \
 	wget -nc http://download.sourceforge.net/libpng/libpng-1.5.13.tar.gz && \
 	tar xvfz libpng-1.5.13.tar.gz && \
@@ -99,11 +100,12 @@ if [ -z $(which convert) ]; then
 	tar xvfz ImageMagick.tar.gz && \
 	cd $(ls -d /root/libpng-1.5.13/ImageMagick-7*) && \
 	chown $USER:$USER . -R && \
-	sudo bash -l -c "./configure --with-bzlib=yes --with-fontconfig=yes --with-freetype=yes --with-gslib=yes --with-gvc=yes --with-jpeg=yes --with-jp2=yes --with-png=yes --with-tiff=yes --disable-shared --with-modules &&
+	./configure --with-bzlib=yes --with-fontconfig=yes --with-freetype=yes --with-gslib=yes --with-gvc=yes --with-jpeg=yes --with-jp2=yes --with-png=yes --with-tiff=yes --disable-shared --with-modules && \
 	make && make install && \
 	ln -s /usr/local/lib/* /usr/lib/. && \
 	ln -s /usr/local/lib/pkgconfig/* /usr/lib/pkgconfig/. && \
-	ln -s /usr/local/bin/* /usr/bin/. && \						                                        convert -list configure"
+	ln -s /usr/local/bin/* /usr/bin/. && \
+	convert -list configure"
 	cd $tmp_pwd
 fi
 ## install rvm