procps/uptime.c

71 lines
1.9 KiB
C

/*
* uptime.c - display system uptime
* Copyright (C) 2012 Craig Small <csmall-procps@enc.com.au>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <errno.h>
#include <getopt.h>
#include <stdlib.h>
#include <stdio.h>
#include "c.h"
#include "nls.h"
#include "proc/whattime.h"
#include "proc/version.h"
static void __attribute__ ((__noreturn__)) usage(FILE * out)
{
fputs(USAGE_HEADER, out);
fprintf(out, _(" %s [options]\n"), program_invocation_short_name);
fputs(USAGE_OPTIONS, out);
fputs(USAGE_HELP, out);
fputs(USAGE_VERSION, out);
fprintf(out, USAGE_MAN_TAIL("uptime(1)"));
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
}
int main(int argc, char **argv)
{
int c;
static const struct option longopts[] = {
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'V'},
{NULL, 0, NULL, 0}
};
program_invocation_name = program_invocation_short_name;
setlocale (LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
while ((c = getopt_long(argc, argv, "hV", longopts, NULL)) != -1)
switch (c) {
case 'h':
usage(stdout);
case 'V':
printf(PROCPS_NG_VERSION);
return EXIT_SUCCESS;
default:
usage(stderr);
}
print_uptime();
return EXIT_SUCCESS;
}