alias to create a ramdisk in MacOS Ventura

gistfile1.txt

ramdisk() {
  if [ "$1" = "on" ]; then
  echo creating a 100MB ramdisk:
  size=$((2 * 1024 * 100))
  device_name=$(hdiutil attach -nomount ram://${size} | awk '{print $1}')
  diskutil eraseVolume HFS+ RAMDisk ${device_name}
  echo created: /Volumes/RAMDisk
  elif [ "$1" = "off" ]; then
    echo "Bye RAMDisk... sure? (control+c abort - INTRO byebye)"
    read
    hdiutil detach /Volumes/RAMDisk
  else
    echo "Uso: ramdisk [on|off]"
  fi
}