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annotate toys/other/uptime.c @ 1322:b91284c2e569 draft

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Make "losetup /dev/loop0 filename" work. Sigh. Implement the complex cases and you screw up the simple cases you already tested...
author Rob Landley <rob@landley.net>
date Thu, 29 May 2014 06:29:12 -0500
parents 960462460639
children 685a0da6ca59
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1 /* uptime.c - Tell how long the system has been running.
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2 *
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3 * Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
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4 * Copyright 2012 Luis Felipe Strano Moraes <lfelipe@profusion.mobi>
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5 * Copyright 2013 Jeroen van Rijn <jvrnix@gmail.com>
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6
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7
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8 USE_UPTIME(NEWTOY(uptime, NULL, TOYFLAG_USR|TOYFLAG_BIN))
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9
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10 config UPTIME
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11 bool "uptime"
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12 default y
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13 help
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14 usage: uptime
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15
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16 Tell how long the system has been running and the system load
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17 averages for the past 1, 5 and 15 minutes.
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18 */
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19
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20 #include "toys.h"
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21
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22 void uptime_main(void)
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23 {
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24 struct sysinfo info;
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25 time_t tmptime;
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26 struct tm * now;
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27 unsigned int days, hours, minutes;
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28 struct utmpx *entry;
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29 int users = 0;
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31 // Obtain the data we need.
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32 sysinfo(&info);
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33 time(&tmptime);
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34 now = localtime(&tmptime);
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35 // Obtain info about logged on users
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36 setutxent();
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37 while ((entry = getutxent())) if (entry->ut_type == USER_PROCESS) users++;
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38 endutxent();
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39
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40 // Time
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41 xprintf(" %02d:%02d:%02d up ", now->tm_hour, now->tm_min, now->tm_sec);
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42 // Uptime
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43 info.uptime /= 60;
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44 minutes = info.uptime%60;
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45 info.uptime /= 60;
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46 hours = info.uptime%24;
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47 days = info.uptime/24;
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48 if (days) xprintf("%d day%s, ", days, (days!=1)?"s":"");
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49 if (hours) xprintf("%2d:%02d, ", hours, minutes);
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50 else printf("%d min, ", minutes);
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51 printf(" %d user%s, ", users, (users!=1) ? "s" : "");
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52 printf(" load average: %.02f, %.02f, %.02f\n", info.loads[0]/65536.0,
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53 info.loads[1]/65536.0, info.loads[2]/65536.0);
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54 }