env_find
if ((ep = env_find((unsigned char*)"DISPLAY"))
if ((env_find((unsigned char*)"USER") == NULL) &&
(ep = env_find((unsigned char*)"LOGNAME"))) {
if ((ep = env_find(var))) {
if ((ep = env_find(var))) {
if ((ep = env_find(var)))
if ((ep = env_find(var)))
ep = env_find(var);
if ((ep = env_find(var)))
struct env_lst *env_find(unsigned char *var);