getenv(3C)

getenv -- return value for environment name

Synopsis

   #include <stdlib.h>
   
   char getenv(const char name);

Description

getenv searches the environment list [see environ(5)] for a string of the form name=value and, if the string is present, returns a pointer to the value in the current environment. Otherwise, it returns a null pointer.

References

environ(5), exec(2), putenv(3C)