OpenWRT opkg upgrade all

opkgrade.sh

confirm() {
  while true; do
    read -rp "[y/n]: " yn
    case $yn in
      [Yy]*) return 0 ;;
      [Nn]*) return 1 ;;
      *) echo "Please answer yes or no." ;;
    esac
  done
}

opkgrade() {
  opkg update
  local upgrades=""
  upgrades=$(opkg list-upgradable)
  if [ "${#upgrades}" -eq 0 ]; then
    echo "Nothing to do"
    return 0
  fi
  echo "$upgrades"
  echo -n "Upgrade the above packages? "
  if confirm; then
    upgrades=$(echo "$upgrades" | awk '{printf "%s ", $1 }')
    opkg upgrade ${upgrades%% }
  fi
}