我怎么知道 `do-release-upgrade` 将升级到哪个版本？

Question

我正在运行 Lubuntu LTS 14.04，并希望升级到最新的 LTS (16.04)。所有升级指南（例如本指南）似乎都建议我应该将官方升级脚本称为do-release-upgrade.

但是我怎么知道这会将我从 14.04 带到 16.04（而不是其他版本，例如最新版本 16.10）？

do-release-upgrade本身的输出似乎不包含它要升级到的版本。（或者我在这里遗漏了什么？）

Answer 1

您可以检查：

$ do-release-upgrade -c
Checking for a new Ubuntu release
New release '17.04' available.
Run 'do-release-upgrade' to upgrade to it.

或者运行升级并取消：

$ do-release-upgrade
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [836 B]
Get:2 Upgrade tool [1,268 kB]
Fetched 1,269 kB in 0s (0 B/s)
authenticate 'zesty.tar.gz' against 'zesty.tar.gz.gpg'
extracting 'zesty.tar.gz'
[sudo] password for muru:

从两个输出中可以清楚地看出，我将升级到 17.04 ( zesty)。

$ do-release-upgrade --help
Usage: do-release-upgrade [options]

Options:
...
  -c, --check-dist-upgrade-only
                        Check only if a new distribution release is available
                        and report the result via the exit code