如何在Linux上的C中设置和获取环境变量？

How to set and get an environment variable in C on Linux?

如何在Linux上的 C中设置和获取环境变量？

You can use the setenv and getenv POSIX APIs to set and get environment variables.

您可以使用setenv和getenv POSIX API来设置和获取环境变量。

To add or change environment variable:

要添加或更改环境变量：

#include <stdlib.h> 

int setenv(const char *envname, const char *envval, int overwrite);

To get value of an environment variable:

要获取环境变量的值：

#include <stdlib.h> 

char *getenv(const char *name);

Answered by anonymous.

匿名回答。

翻译自: https://www.systutorials.com/how-to-set-and-get-an-environment-variable-in-c-on-linux/