synopsis
synopsis(stdout);
synopsis(stderr);
const char *statfmt, *options, *synopsis;
synopsis = "[-fnqsv] file ...";
synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]";
usage(synopsis);
usage(synopsis);
usage(synopsis);
usage(const char *synopsis)
(void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis);