message: change printf to echo
diff: printf "\tDisk space available: ${DISK_AVAIL}G\n\n"
  if [ $MEM_GIG -lt 8 ]; then
  - printf "\tYour system must have 8 or more Gigabytes of physical memory installed.\n"
  - printf "\tExiting now.\n"
  + echo "Your system must have 8 or more Gigabytes of physical memory installed."
  + echo "Exiting now."
  exit 1
  fi
  if [ $OS_MIN -lt 12 ]; then
  - printf "\tYou must be running Mac OS 10.12.x or higher to install EOSIO.\n"
  - printf "\tExiting now.\n"
  + echo "You must be running Mac OS 10.12.x or higher to install EOSIO."
  + echo "Exiting now."
  exit 1
  fi
  if [ $DISK_AVAIL -lt 100 ]; then
  - printf "\tYou must have at least 100GB of available storage to install EOSIO.\n"
  - printf "\tExiting now.\n"
  + echo "You must have at least 100GB of available storage to install EOSIO."
  + echo "Exiting now."
  exit 1
  fi
  