Uptime command

[iMatt]

I was just told this from my host as a reply to a question I asked them, I think it's a good response, except I don't know how to do it.

"Your best bet would be to create a script that runs the "uptime" command every 5-10 minutes, and then pipe the output to a webpage."

How would I do this?

P.S.- I sure wish I could offer some sort of points for a good response to this! ;)

[Nick Presta]

EDIT: To actually answer your question, the "uptime command" is a *NIX command that is used to display uptime, server load and users. You can use exec() in PHP to execute this.


You can use these two "scripts" I wrote for my site.

   $reguptime = trim(exec("uptime"));
  if($reguptime) {
    if(preg_match("/, *(\d) (users?), .*: (.*), (.*), (.*)/", $reguptime, $uptime)) {
      $loadnow = $uptime[3]; // Server load right now
      $load15 = $uptime[4]; // Server Load 15 minutes ago
    } else {
      $loadnow = 'Unavailable';
      $load15 = 'Unavailable';
    }
  }

echo $loadnow;
echo $load15; 
  

That will do server load.

For a nice custom uptime, do this:

      // static uptime string
     function format_uptime($seconds) {

          $uptimeString = '';
          $secs = intval($seconds % 60);
          $mins = intval($seconds / 60 % 60);
          $hours = intval($seconds / 3600 % 24);
          $days = intval($seconds / 86400);

          if ($days > 0) {
               $uptimeString .= $days;
               $uptimeString .= (($days == 1) ? " day" : " days");
          }
          if ($hours > 0) {
               $uptimeString .= (($days > 0) ? ", " : "") . $hours;
               $uptimeString .= (($hours == 1) ? " hour" : " hours");
          }
          if ($mins > 0) {
               $uptimeString .= (($days > 0 || $hours > 0) ? ", " : "") . $mins;
               $uptimeString .= (($mins == 1) ? " minute" : " minutes");
          }
          if ($secs > 0) {
               $uptimeString .= (($days > 0 || $hours > 0 || $mins > 0) ? ", " : "") . $secs;
               $uptimeString .= (($secs == 1) ? " second" : " seconds");
          }
          return $uptimeString;
     }

     // read in the uptime (using exec)
     $uptime = exec("cat /proc/uptime");
     $uptime = split(" ",$uptime);
     $uptimeSecs = $uptime[0];

     // get the static uptime
     $staticUptime = 'Server Uptime: ' . format_uptime($uptimeSecs); 
  

Personally, I use: http://siteuptime.com/ with the script: http://nickpresta.ath.cx/sources4u/site_uptime.phps that I wrote.

[iMatt]

I tried the first one within another script I have for the actual time (I'm mainly looking for server load, etc. right now)
and got unavailable, unavailable for both. Does it have to be in its own file?

[Helloadam]

Hey,

One thing that you might cause you to get that is if

shell_exec

is not set in your PHP.ini file or if you don't have access to that...

You can also check out

 <?php
$reguptime = trim(exec("uptime"));
if ($reguptime) {
if (preg_match("/, *(\d) (users?), .*: (.*), (.*), (.*)/", $reguptime, $uptime)) {
$users[0] = $uptime[1];
$users[1] = $uptime[2];
$loadnow = $uptime[3];
$load15 = $uptime[4];
$load30 = $uptime[5];
} else {
$users[0] = "Unavailable";
$users[1] = "--";
$loadnow = "Unavailable";
$load15 = "--";
$load30 = "--";
}
$uptime = shell_exec("cut -d. -f1 /proc/uptime");
$days = floor($uptime/60/60/24);
$hours = str_pad($uptime/60/60%24,2,"0",STR_PAD_LEFT);
$mins = str_pad($uptime/60%60,2,"0",STR_PAD_LEFT);  
$secs = str_pad($uptime%60,2,"0",STR_PAD_LEFT);
}
 
echo "$loadnow (Load like right right right now) - $load15 (load like 15 minutes ago) and $load30 (load like 30 min ago)";
echo "<br /><br />";
echo "Server up for $days Days and $hours hours $mins minutes and $secs";
 
?>  

Which should work, shows server load and uptime...

From,
Adam

[iMatt]

The second part works but I'm still getting Unavailable for the first part.

And I have no clue what you mean about shell_exec in PHP.ini.

[Helloadam]

Hey,

PHP funtions exec and shell_exec need to be enabled in your php.ini file. I think you have to enter it in disable_functions or something like that....

You also need safe mod to be off...

From,
Adam

[iMatt]

Hey,

PHP funtions exec and shell_exec need to be enabled in your php.ini file. I think you have to enter it in disable_functions or something like that....

You also need safe mod to be off...

From,
Adam

:blushing:
And where is php.ini? It doesn't show up when I just do domain.com/php.ini

[Helloadam]

Hey,

PHP.ini is the like the core settings file that PHP uses. I'm guessing you are running this script off of a shared hosting environment? If so you are going to need to contact your webhost about this (some of them turn it off for security purpose even tho its not). This requres root access to enable or change anything in the PHP.ini file.

I'm not sure if you can put a .htaccess file in your public_html (guessing your hosts uses cPanel) folder so you have this option enabled...

From,
Adam

[iMatt]

Nope, my host doesn't use cPanel (DreamHost).
I'll just live with the time for now til I find a better option, thanks though.

[Helloadam]

Hey,

Well if the server uptime works then the other ones should work as well as they use the same command.

Which script are you using? Nicks or mine?

From,
Adam