是否可以将一个外壳的变量更新为另一个外壳? [英] Is it possible to update a varible from one shell to another shell?

问题描述

如何将变量从一个外壳更新到另一个外壳?

How can we update a variable from one shell to another shell ?

假设我要打开2个Putty会话，我想在第一个SHELL中设置一个变量，我需要该变量才能从第二个SHELL进行访问.

Suppose , I am having 2 Putty sessions opened , I want to set a variable in the first SHELL and I need that variable to access from the 2nd SHELL .

有可能吗?

推荐答案

由于每个进程的环境都受到保护，因此无法共享环境变量.我建议使用共享文件系统上的文件来存储所需的变量，并在需要知道新值是什么时读取该文件.

As each process' environment is protected, there's no way to share environment variables. I would suggest using a file on a shared filesystem to store the variable you want and reading that file in whenever you'd need to know what the new value is.

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