最近需要升級Ubuntu,所以查了這方面的資料,做點小記:
1.apt-get update 與 apt-get ugrade
其實這個和Ubuntu升級沒關係,這是升級安裝包相關的命令,apt-get update 是刷新可安裝的軟件列表(但是不做任何實際的安裝動作。)apt-get upgrade這個是進行安裝包的更新(這是軟件版本的升級)。
2.apt-get dist-upgrade
Ubuntu出身於Debian,所以也可以用apt-get dist-upgrade進行版本升級(Ubuntu版本的升級),但是在Ubuntu中,推薦另外一個命令來升級do-release-upgrade.原因如下:
3.do-release-upgrade
這是Ubuntu官方推薦的升級方式,官方的解釋:
Debian based systems can also be upgraded by using apt-get dist-upgrade. However, using do-release-upgrade is recommended because it has the ability to handle system configuration changes sometimes needed between releases.
另外這個命令還可以跟參數do-release-upgrade -d,這個是升級到開發版本,所以會不穩定,不建議在生產環境使用.
Upgrading to a development release is not recommended for production environments.