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Full Discussion: Getting uptime
Top Forums UNIX for Dummies Questions & Answers Getting uptime Post 37327 by Perderabo on Tuesday 17th of June 2003 07:33:51 AM
Old 06-17-2003
I don't use OS X, but the kernel variable is called boottime in most kernels. It is an integer as would be returned by the time() system call. Your process will need read permission on /dev/mem to read it. If you have adb you can use that to read it via a shell script.

I use "ps -fp 1" rather than "uptime" to see when a system booted.

Option 4 would be to find a file that is changed at boottime. Do your startup scripts keep a log? What was the last time that log changed? If no such file exists, add something to the startup scripts to record boottime.
 

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ns_info(3aolserver)					    AOLserver Built-In Commands 				       ns_info(3aolserver)

__________________________________________________________________________________________________________________________________________________

NAME
ns_info, ns_server, ns_stats - commands SYNOPSIS
ns_info address ns_info argv0 ns_info boottime ns_info builddate ns_info config ns_info home ns_info hostname ns_info interp ns_info label ns_info log ns_info name ns_info pageroot ns_info platform ns_info server ns_info tcllib ns_info uptime ns_info version ns_server option ?arg arg ...? ns_stats option ?arg arg ...? _________________________________________________________________ DESCRIPTION
ns_info boottime Returns the server boot time in seconds. ns_info config Returns the configuration file name. ns_info home Returns the directory where the AOLserver was installed. ns_info hostname Returns the name of the host on which server is running (e.g., www.myhost.com). ns_info interp Returns the number of the Tcl interpreter currently being used. ns_info label Returns the source code label for the server. If no label was used, "unlabeled" is returned. ns_info log Returns the location of the server log file (e.g., /home/myserver/log/server.log). ns_info name Returns the name of the AOLserver. It's usually "AOLserver." ns_info pageroot returns the directory containing the HTML pages for this virtual server. ns_info platform Returns the name of the platform that the server is running on (e.g., Solaris). ns_info server returns the name of this virtual server. ns_info tcllib returns the directory where the AOLserver Tcl source code resides for this virtual server. ns_info uptime returns the time in seconds that the server has been up. ns_info version returns the version of the AOLserver. SEE ALSO
nsd(1), info(n) KEYWORDS
AOLserver 4.0 ns_info(3aolserver)
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