int main(int argc, char **argv)
{
const char *filename;
long lines;
int ch;
struct stat st;
off_t size = 0;
static const struct option longopts[] = {
{ "lines", required_argument, 0, 'n' },
{ "version", no_argument, 0, 'V' },
{ "help", no_argument, 0, 'h' },
{ NULL, 0, 0, 0 }
};
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
lines = old_style_option(&argc, argv);
if (lines < 0)
lines = DEFAULT_LINES;
while ((ch = getopt_long(argc, argv, "n:N:Vh", longopts, NULL)) != -1)
switch((char)ch) {
case 'n':
case 'N':
lines = strtol_or_err(optarg,
_("failed to parse number of lines"));
break;
case 'V':
printf(_("%s from %s\n"), program_invocation_short_name,
PACKAGE_STRING);
exit(EXIT_SUCCESS);
case 'h':
usage(stdout);
default:
usage(stderr);
}
if (argc == optind)
errx(EXIT_FAILURE, _("no input file specified"));
filename = argv[optind];
if (stat(filename, &st) != 0)
err(EXIT_FAILURE, _("stat failed %s"), filename);
size = st.st_size;;
tailf(filename, lines);
#ifdef HAVE_INOTIFY_INIT
if (!watch_file_inotify(filename, &size))
#endif
watch_file(filename, &size);
return EXIT_SUCCESS;
}
int main(int argc, char **argv)
{
const char *filename;
size_t lines;
int ch;
struct stat st;
static const struct option longopts[] = {
{ "lines", required_argument, 0, 'n' },
{ "version", no_argument, 0, 'V' },
{ "help", no_argument, 0, 'h' },
{ NULL, 0, 0, 0 }
};
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
if (!old_style_option(&argc, argv, &lines))
lines = DEFAULT_LINES;
while ((ch = getopt_long(argc, argv, "n:N:Vh", longopts, NULL)) != -1)
switch ((char)ch) {
case 'n':
case 'N':
lines = strtoul_or_err(optarg,
_("failed to parse number of lines"));
break;
case 'V':
printf(UTIL_LINUX_VERSION);
exit(EXIT_SUCCESS);
case 'h':
usage(stdout);
default:
usage(stderr);
}
if (argc == optind)
errx(EXIT_FAILURE, _("no input file specified"));
filename = argv[optind];
if (stat(filename, &st) != 0)
err(EXIT_FAILURE, _("stat of %s failed"), filename);
if (!S_ISREG(st.st_mode))
errx(EXIT_FAILURE, _("%s: is not a file"), filename);
if (st.st_size)
tailf(filename, lines, &st);
#ifdef HAVE_INOTIFY_INIT
if (!watch_file_inotify(filename, &st))
#endif
watch_file(filename, &st);
return EXIT_SUCCESS;
}
int main(int argc, char **argv)
{
char buffer[BUFSIZ];
size_t osize, nsize;
FILE *str;
const char *filename;
int count;
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
if (argc != 2) {
fprintf(stderr, _("Usage: tailf logfile\n"));
exit(1);
}
filename = argv[1];
tailf(filename, 10);
for (osize = filesize(filename);;) {
nsize = filesize(filename);
if (nsize != osize) {
if (!(str = fopen(filename, "r"))) {
fprintf(stderr, _("Cannot open \"%s\" for read\n"), filename);
perror(argv[0]);
exit(1);
}
if (!fseek(str, osize, SEEK_SET))
while ((count = fread(buffer, 1, sizeof(buffer), str)) > 0)
fwrite(buffer, 1, count, stdout);
fflush(stdout);
fclose(str);
osize = nsize;
}
usleep(250000); /* 250mS */
}
return 0;
}
