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| author | Karel Zak | 2012-06-29 17:27:40 +0200 |
|---|---|---|
| committer | Karel Zak | 2012-06-29 17:27:40 +0200 |
| commit | c8a6af07e79729175be1aec65d71dfd369c369a0 (patch) | |
| tree | ea11e872f1d3f00486d1460b1c1b36f48146b8ef /login-utils/utmpdump.c | |
| parent | utmpdump: add long options (diff) | |
| download | kernel-qcow2-util-linux-c8a6af07e79729175be1aec65d71dfd369c369a0.tar.gz kernel-qcow2-util-linux-c8a6af07e79729175be1aec65d71dfd369c369a0.tar.xz kernel-qcow2-util-linux-c8a6af07e79729175be1aec65d71dfd369c369a0.zip | |
utmpdump: cleanup usage()
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'login-utils/utmpdump.c')
| -rw-r--r-- | login-utils/utmpdump.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/login-utils/utmpdump.c b/login-utils/utmpdump.c index b5d6c924a..6f8bef5a1 100644 --- a/login-utils/utmpdump.c +++ b/login-utils/utmpdump.c @@ -184,11 +184,21 @@ void undump(FILE *fp) free(linestart); } -void -usage(int result) +static void __attribute__((__noreturn__)) usage(FILE *out) { - printf(_("Usage: utmpdump [ -frhV ] [ filename ]\n")); - exit(result); + fputs(USAGE_HEADER, out); + + fprintf(out, + _(" %s [options]\n"), program_invocation_short_name); + + fputs(USAGE_OPTIONS, out); + fputs(_(" -f, --follow output appended data as the file grows\n" + " -r, --reverse write back dumped data into utmp file\n" + " -h, --help display this help and exit\n" + " -V, --version output version information and exit\n"), out); + + fprintf(out, USAGE_MAN_TAIL("utmpdump(1)")); + exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); } int main(int argc, char **argv) @@ -222,13 +232,13 @@ int main(int argc, char **argv) break; case 'h': - usage(0); + usage(stdout); break; case 'V': printf(UTIL_LINUX_VERSION); - break; + return EXIT_SUCCESS; default: - usage(1); + usage(stderr); } } |