108 lines
2.1 KiB
C
108 lines
2.1 KiB
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
|
|
* This file is part of ToaruOS and is released under the terms
|
|
* of the NCSA / University of Illinois License - see LICENSE.md
|
|
* Copyright (C) 2015-2018 K. Lange
|
|
*
|
|
* uptime - Print system uptime
|
|
*/
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <time.h>
|
|
#include <sys/time.h>
|
|
|
|
void print_time(void) {
|
|
struct timeval now;
|
|
struct tm * timeinfo;
|
|
char clocktime[10];
|
|
|
|
gettimeofday(&now, NULL);
|
|
timeinfo = localtime((time_t *)&now.tv_sec);
|
|
strftime(clocktime, 80, "%H:%M:%S", timeinfo);
|
|
|
|
printf(" %s ", clocktime);
|
|
}
|
|
|
|
#define MINUTE (60)
|
|
#define HOUR (60 * MINUTE)
|
|
#define DAY (24 * HOUR)
|
|
void print_seconds(int seconds) {
|
|
if (seconds > DAY) {
|
|
int days = seconds / DAY;
|
|
seconds -= DAY * days;
|
|
printf("%d day%s, ", days, days != 1 ? "s" : "");
|
|
}
|
|
if (seconds > HOUR) {
|
|
int hours = seconds / HOUR;
|
|
seconds -= HOUR * hours;
|
|
int minutes = seconds / MINUTE;
|
|
printf("%2d:%02d", hours, minutes);
|
|
return;
|
|
} else if (seconds > MINUTE) {
|
|
int minutes = seconds / MINUTE;
|
|
printf("%d minute%s, ", minutes, minutes != 1 ? "s" : "");
|
|
seconds -= MINUTE * minutes;
|
|
}
|
|
|
|
printf("%2d second%s", seconds, seconds != 1 ? "s" : "");
|
|
}
|
|
|
|
void print_uptime(void) {
|
|
FILE * f = fopen("/proc/uptime", "r");
|
|
if (!f) return;
|
|
|
|
int seconds;
|
|
|
|
char buf[1024] = {0};
|
|
fgets(buf, 1024, f);
|
|
char * dot = strchr(buf, '.');
|
|
*dot = '\0';
|
|
dot++;
|
|
dot[3] = '\0';
|
|
|
|
seconds = atoi(buf);
|
|
|
|
printf("up ");
|
|
|
|
print_seconds(seconds);
|
|
}
|
|
|
|
void show_usage(int argc, char * argv[]) {
|
|
printf(
|
|
"uptime - display system uptime information\n"
|
|
"\n"
|
|
"usage: %s [-p]\n"
|
|
"\n"
|
|
" -p \033[3mshow just the uptime info\033[0m\n"
|
|
" -? \033[3mshow this help text\033[0m\n"
|
|
"\n", argv[0]);
|
|
}
|
|
|
|
int main(int argc, char * argv[]) {
|
|
int just_pretty_uptime = 0;
|
|
int opt;
|
|
|
|
while ((opt = getopt(argc, argv, "?p")) != -1 ) {
|
|
switch (opt) {
|
|
case 'p':
|
|
just_pretty_uptime = 1;
|
|
break;
|
|
case '?':
|
|
show_usage(argc, argv);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
if (!just_pretty_uptime)
|
|
print_time();
|
|
print_uptime();
|
|
|
|
printf("\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
|