查詢目前舊系統的維護狀態，可以執行：
| 命令 | 參數 | 說明 |
| ubuntu-support-status | 無 | 列出目前系統中套件的維護狀況 |
| –show-unsupported | 列出不在支援的套件 | |
| –show-supported | 列出支援套件 | |
| –show-all | 支援不支援都列出 |
$> ubuntu-support-status Support status summary of 'my-server': You have 710 packages (92.9%) supported until April 2023 (Canonical - 5y) You have 3 packages (0.4%) supported until April 2023 (Community - 5y) You have 1 packages (0.1%) that can not/no-longer be downloaded You have 50 packages (6.5%) that are unsupported Run with --show-unsupported, --show-supported or --show-all to see more details
如果您的 Ubuntu 系統已經超過維護期限了，一般建議是升級到新的版本，升級的指令是：
$> do-release-upgrade
參考：
ubuntu 官方維護週期
