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Full Discussion: Precise system uptime??
Operating Systems Solaris Precise system uptime?? Post 302807499 by Yeaboem on Tuesday 14th of May 2013 08:16:54 PM
Old 05-14-2013
Precise system uptime??
OK folks, my first post here.. hope the community can come up with a clever solution. Cross posting this in the Solaris and Shell scripting forums, as problem is scripting problem specifically on Solaris platform.

I am trying to detect a host's uptime with greater precision than is offered up by the usual suspects (e.g. uptime, who -b, last reboot -n 1, ...). These all offer only hour:minute precision, and don't include the year.

if all the target hosts were running "modern" Solaris, I might be able to grope for answer down /proc/0 (init) path for a useable timestamp, but script must run a) on older Solaris hosts, some with several hundred days of uptime, and b) without any elevated priviledges.

if I could compile some C program, I would grab the output of times(), do some math, and return a standard time value of N seconds since epoch. For the sake of this question, I must rule out that possibility. The solution must be basic Perl or shell script, executing any standard tools included with the Solaris distribution.

Anyone know of a value to inspect using kstat? mdb? dtrace?
 

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LEARN ABOUT MOJAVE

install-solaris

install-solaris(1M)                                                                                                            install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris  invokes  the  Solaris  Install  program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

           Minimum physical memory for all installation types

       128 MB

           Minimum physical memory required for windowing system

       384 MB

           Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

           Minimum physical memory for all installation types

       256 MB

           Minimum physical memory required for windowing system

       512 MB

           Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris  exists  only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcdrom  (Solaris instal-  |
       |                             |lation media)                |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Evolving                     |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

                                                                    23 Sep 2005                                                install-solaris(1M)
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