global_environ
environ_free(global_environ);
envent = environ_find(global_environ, name);
envent = environ_find(global_environ, "HOME");
environ_put(global_environ, $1, 0);
environ_put(global_environ, $2, ENVIRON_HIDDEN);
env = global_environ;
env = global_environ;
environ_copy(global_environ, env);
envent = environ_find(global_environ, key);
value = environ_find(global_environ, name);
global_environ = environ_create();
environ_put(global_environ, *var, 0);
environ_set(global_environ, "PWD", 0, "%s", cwd);
struct environ *global_environ;