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Posted by Jerry Stuckle on 10/10/07 20:42
J.O. Aho wrote:
> Jerry Stuckle wrote:
>> J.O. Aho wrote:
>>> Jerry Stuckle wrote:
>>>> J.O. Aho wrote:
>>>>> Jerry Stuckle wrote:
>>>>>> Henk Oegema wrote:
>>>>>>>> J.O. Aho wrote:
>>>>>>> Tnx Aho for answering. :)
>>>>>>>> Henk Oegema wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>> You would need to use
>>>>>>>>
>>>>>>>> export day=`php /path/to/yout/file/uptime.php`
>>>>>>>>
>>>>>>>> if you use it this way, you need to make the script to take
>>>>>>>> arguments, so
>>>>>>>> that
>>>>>>>> you can get the day, hour and minute alone. Don't forget to echo
>>>>>>>> about
>>>>>>>> the value.
>>>>>>> Can you please be a little bit more specific. It's not quit clear to
>>>>>>> me.
>>>>>>> Why (and how) must the script take arguments? The values of the 3
>>>>>>> variables are already known to the script.
>>>>>>> I only need to pass them to the operating system.
>>>>>>>> Otherwise you can use a shell script with awk that can read out the
>>>>>>>> values
>>>>>>>> and then set each variable, but then you could skip using php, as
>>>>>>>> you
>>>>>>>> get
>>>>>>>> the uptime from uptime command directly.
>>>>>>> You right, this is also a possibility.
>>>>>> But what's the operating system going to do with them?
>>>>>> The operating system doesn't take parameters. Rather, you run a
>>>>>> program
>>>>>> (even if it is the shell) which does something with parameters.
>>>>> The values are already "stored" in the OS in question, it do have
>>>>> track of
>>>>> it's own lifespan, but of course not stored as a variable that is
>>>>> accessible
>>>>> by the shell.
>>>> How are they "stored" in the OS? From what he's saying, they're in his
>>>> program and he needs to tell the OS about them somehow.
>>>>
>>> The os is aware of the system clock and knows how many ticks it been
>>> running,
>>> in that way the values are stored.
>>>
>> Yes, but that's not necessarily the value in his program, is it?
>
> No, it's in a way true, but the values in the script is based on it.
>
>
The OS doesn't know or care what the values are based on. He just needs
to put *some value* to the OS. It might come from the OS originally, an
entry that he keyed in (like he was before) or even a random number
generator.
To the OS it's all the same - something coming from a program.
And in this case it isn't going to the OS at all - but to an application
program.
--
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Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
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