Address shellcheck issues in set_SUDO.sh

Author: zbeekman

prerequisites/set_SUDO.sh

@@ -6,8 +6,9 @@ set_SUDO_if_necessary()
   else
     SUDO_COMMAND="sudo env LD_LIBRARY_PATH=${LD_LIBRARY_PATH}"
   fi
-  printf "$this_script: $package_to_build installation path is ${install_path}"
-  printf "Checking whether the $package_to_build installation path exists... "
+  # shellcheck disable=SC2154
+  printf "%s: %s installation path is %s" "$this_script" "$package_to_build" "${install_path}"
+  printf "Checking whether the %s installation path exists... " "$package_to_build"
   if [[ -d "${install_path}" ]]; then
     printf "yes\n"
     printf "Checking whether I have write permissions to the installation path... "
@@ -20,11 +21,11 @@ set_SUDO_if_necessary()
   else
     printf "no\n"
     printf "Checking whether I can create the installation path... "
-    if mkdir -p ${install_path} >& /dev/null; then
+    if mkdir -p "${install_path}" >& /dev/null; then
       printf "yes.\n"
     else
       printf "no.\n"
-      SUDO=$SUDO_COMMAND
+      export SUDO=$SUDO_COMMAND
     fi
   fi
 }