setenv

Questions about putenv() and setenv()

[The] putenv(char *string); […] call seems fatally flawed. Yes, it is fatally flawed. It was preserved in POSIX (1988) because that was the prior art. The setenv() mechanism arrived later. Correction: The POSIX 1990 standard says in §B.4.6.1 “Additional functions putenv() and clearenv() were considered but rejected”. The Single Unix Specification (SUS) version 2 from … Read more

How to use setenv() to export a variable in c++?

From the setenv() manual entry: SYNOPSIS #include <stdlib.h> int setenv(const char *envname, const char *envval, int overwrite); DESCRIPTION The setenv() function shall update or add a variable in the environment of the calling process. The envname argument points to a string containing the name of an environment variable to be added or altered. The environment … Read more