spawn-pipe.h

   1 int spawnvppe_pipe(const char *cmd, const char **argv, const char **env, char **path, int pin[], int pout[]);
   2 int spawnvpe_pipe(const char *cmd, const char **argv, const char **env, int pin[], int pout[]);
   3 const char **copy_environ();
   4 const char **copy_env(const char **env);
   5 void env_unsetenv(const char **env, const char *name);