diff --git a/checkout-dev.sh b/checkout-dev.sh
index 901c2b7..0e72823 100644
--- a/checkout-dev.sh
+++ b/checkout-dev.sh
@@ -12,5 +12,5 @@ for d in */; do
     cd ..
 done
 
-cd
+cd installation
 ./build.sh
\ No newline at end of file
diff --git a/install.sh b/install.sh
index a8b46c5..233e961 100755
--- a/install.sh
+++ b/install.sh
@@ -1,58 +1,36 @@
 #!/bin/bash
 
-debian=false;
-arch=false;
-mac=false;
-
 # get operating system
-os_info() {
+install_packages() {
   declare -A osInfo;
-  osInfo[/etc/arch-release]=arch
-  osInfo[/etc/debian_version]=debian
-  osInfo[/usr/local/Homebrew]=mac
+  osInfo[/usr/bin/pacman]=pacman
+  osInfo[/usr/bin/apt]=apt
+  osInfo[/usr/local/Homebrew]=brew
 
   for f in ${!osInfo[@]}
   do
     if [[ -f $f ]];then
-      if [[ ${osInfo[$f]} == 'arch' ]]; then
-        arch=true;
-      elif [[ ${osInfo[$f]} == 'debian' ]]; then
-        debian=true;
-      elif [[ ${osInfo[$f]} == 'mac' ]]; then
-        mac=true;
+      if [[ ${osInfo[$f]} == 'pacman' ]]; then
+        pacman -S clang make cmake fltk catch2
+
+      elif [[ ${osInfo[$f]} == 'apt' ]]; then
+        apt install clang make cmake clang-tidy libfltk1.3 libfltk1.3-dev
+
+        git clone https://github.com/catchorg/Catch2.git
+        cd Catch2
+        cmake -Bbuild -H. -DBUILD_TESTING=OFF
+        sudo cmake --build build/ --target install
+
+      elif [[ ${osInfo[$f]} == 'brew' ]]; then
+        brew install llvm clang make cmake clang-format fltk catch2
+        
       fi
     fi
   done
 }
 
-# installing package, $1 = pacman; $2 = apt-get, $3 = homebrew
-install() {
-  if [ $debian == true ] && [ $2 != 'null' ]; then
-    sudo apt-get install $2
-  elif [ $arch == true ] && [ $1 != 'null' ]; then
-    sudo pacman -S $1
-  elif [ $mac == true ] && [ $3 != 'null' ]; then
-    sudo brew install $3
-  fi
-}
 
-os_info
-
-install 'clang' 'clang' 'clang'
-install 'make' 'make' 'make'
-install 'cmake' 'cmake' 'cmake'
-install 'null' 'clang-tidy' 'clang-tidy'
-install 'fltk' 'libfltk1.3 libfltk1.3-dev' 'fltk'
-install 'catch2' 'null' 'catch2'
-
-if [[ $apt ]]; then
-
-  git clone https://github.com/catchorg/Catch2.git
-  cd Catch2
-  cmake -Bbuild -H. -DBUILD_TESTING=OFF
-  sudo cmake --build build/ --target install
-
-fi
+install_packages
 
 echo "cloning repositories"
 cd ..
diff --git a/update.sh b/update.sh
index a164227..b1a0438 100755
--- a/update.sh
+++ b/update.sh
@@ -15,5 +15,5 @@ for d in */; do
     cd ..
 done
 
-cd
+cd installation
 ./build.sh
\ No newline at end of file