如何在bash中取消设置“！::”环境变量？

我有一个失败的构建脚本，因为它尝试unset调用一个环境变量!::。那失败了：

$ unset -v '!::'
sh: unset: `!::': not a valid identifier

我如何取消设置该变量？这是在Windows上（MSYS）。

bash environment-variables

— Timmmm
source

Answers:

啊哈，我找到了答案：

env --unset='!::'

— Timmmm
source

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