p_gecos
int p_gecos(char *, struct passwd *, ENTRY *);
{ "full name", p_gecos, 0, 9, e2, },
{ "office phone", p_gecos, 0, 12, e2, },
{ "home phone", p_gecos, 0, 10, e2, },
{ "office location", p_gecos, 0, 15, e2, },