NAME setenv - change or add an environment variable LIBRARY Standard C library ( libc , -lc ) SYNOPSIS ... include int setenv(const char * name , const char * value , int overwri…NAME setenv - change or add an environment variable LIBRARY Standard C library ( libc , -lc ) SYNOPSIS ... include int setenv(const char * name , const char * value , int overwri…subsequent call to getenv (), putenv (3), setenv (3), or unsetenv (3). The "secure execution" mode ... ALSO clearenv (3), getauxval (3), putenv (3), setenv (3), unsetenv (3), capab…subsequent call to getenv (), putenv (3), setenv (3), or unsetenv (3). The "secure execution" mode ... ALSO clearenv (3), getauxval (3), putenv (3), setenv (3), unsetenv (3), capab…environment using putenv (3) and setenv (3). RETURN VALUE The clearenv () function returns zero ... unchanged. SEE ALSO getenv (3), putenv (3), setenv (3), unsetenv (3), environenvironment. SEE ALSO clearenv (3), getenv (3), setenv (3), unsetenv (3), environ