Re: How to pass variable to operating system.

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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Jerry Stuckle
JDS Computer Training Corp.
jstucklex@xxxxxxxxxxxxx
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