Upgrading LEDE packages in one command
'opkg upgrade package_name' allow upgrading one package.
To upgrade all packages, run:
Please be warned that package upgrades are processed without order. Please make sure to have sufficient space on your device.
Automating LEDE package upgrades is strongly discouraged, unless you manage a central repository and push upgrades from there
https://openwrt.org/docs/guide-user/additional-software/show_upgradable_packages_after_ssh_login?s