nux 升级

Linux系统可使用包管理器，如Debian/Ubuntu用sudo apt update && sudo apt upgrade，重大升级用sudo apt-get dist-upgrade；Red Hat/CentOS用sudo yum update或sudo dnf update，重大升级用sudo yum distro-sync或sudo dnf distro-sync；Arch Linux用sudo pacman -Syu，重大升级用sudo pacman -Syyu