find_command
find_command(n->ncmd.args->narg.text, &entry, 0,
find_command(argv[0], &cmdentry, cmd_flags, path);
find_command(name, &entry, DO_ERR, pathval());
find_command(argv[i], &entry, 0, path);
void find_command(const char *, struct cmdentry *, int, const char *);