ubase/uptime.c
2013-08-16 15:51:37 +01:00

67 lines
1.3 KiB
C

/* See LICENSE file for copyright and license details. */
#include <sys/sysinfo.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <utmp.h>
#include "util.h"
static void
usage(void)
{
eprintf("usage: %s\n", argv0);
}
int
main(int argc, char *argv[])
{
struct utmp usr;
FILE *ufp;
struct sysinfo info;
time_t tmptime;
struct tm *now;
unsigned int days, hours, minutes;
int nusers = 0;
ARGBEGIN {
default:
usage();
} ARGEND;
if (sysinfo(&info) < 0)
eprintf("sysinfo:");
time(&tmptime);
now = localtime(&tmptime);
printf(" %02d:%02d:%02d up ", now->tm_hour, now->tm_min, now->tm_sec);
info.uptime /= 60;
minutes = info.uptime % 60;
info.uptime /= 60;
hours = info.uptime % 24;
days = info.uptime / 24;
if (days)
printf("%d day%s, ", days, days > 1 ? "s" : "");
if (hours)
printf("%2d:%02d, ", hours, minutes);
else
printf("%d min, ", minutes);
if ((ufp = fopen(_PATH_UTMP, "r"))) {
while(fread(&usr, sizeof(usr), 1, ufp) == 1) {
if (!*usr.ut_name || !*usr.ut_line ||
usr.ut_line[0] == '~')
continue;
nusers++;
}
fclose(ufp);
printf(" %d user%s, ", nusers, nusers > 1 ? "s" : "");
}
printf(" load average: %.02f, %.02f, %.02f\n",
info.loads[0] / 65536.0f,
info.loads[1] / 65536.0f,
info.loads[2] / 65536.0f);
return 0;
}