Re: running process from webmin - times-out?

[Jamie C. <jca...@we...>]

Yes, that is best , because if you use the backquote
operator in perl then all the output from your program
will be read into a variable which could potentially
get huge.

You could also display the output from the program
in the browser, with code like :

open(OUTOUT, "/usr/local/execute/fire 2>&1 |");
while(<OUTPUT>) {
	print;
	}
close(OUTPUT);

but that would also be a bad idea if lots of output
is generated.

  - Jamie

Diego Montalvo wrote:

> Jamie,
> 
> exactly,  the process does produce alot of output in
> the shell.  sometimes hours of output.
> 
> So I should use the following command?  
> system("/usr/local/excute/fire >/dev/null 
> 2>&1 </dev/null &");
> 
> 
> 
> Diego
> 
> --- Jamie Cameron <jca...@we...> wrote:
> 
>>Support wrote:
>>
>>
>>>Hello, 
>>>
>>>Additional information regarding "running process
>>>
>>from webmin - 
>>
>>>times-out?"   question
>>>
>>>the process actually only runs for about 
>>>
>>6:55-6:56 minutes then freezes 
>>
>>>until I "kill -9" the process.
>>>
>>
>>Does this process produce a lot of output when you
>>run it from the
>>shell prompt?
>>
>>
>>
>>>the parent process is: 
>>>
>>>
>>>
> /usr/bin/perl-w/usr/local/lib/webmin/howdy_index/c.cgi
> 
>>....
>>
>>>shouldn't it be running under /sbin/init ...
>>>
>>
>>No, because webmin is still waiting for output from
>>the
>>process as you are running it within backquotes. For
>>a long-running
>>command, it may be better to put it in the
>>background with
>>code like  system("/usr/local/excute/fire >/dev/null
>>2>&1 </dev/null &");
>>assuming you don't want to get the output.
>>
>>  - Jamie
>>
>>
>>
>>> 
>>>
>>>Diego
>>>
>>> 
>>>
>>> 
>>>
>>>    ----- Original Message -----
>>>
>>>    From: Support <mailto:su...@ea...>
>>>
>>>    To: web...@li...
>>>    <mailto:web...@li...>
>>>
>>>    Sent: Thursday, August 01, 2002 2:43 PM
>>>
>>>    Subject: running process from webmin -
>>>
>>times-out?
>>
>>>    Hello,
>>>
>>>    I am developing a module, which runs a unix
>>>
>>program.  The progam
>>
>>>    works fine from unix shell, or from Webmin if
>>>
>>the process is short. 
>>
>>>    After about 20 minutes I notice that the
>>>
>>process is still running,
>>
>>>    but is not doing anything "idle" or frozen,
>>>
>>and i must kill the
>>
>>>    process.  If I leave the computer overnight, I
>>>
>>come back to " no
>>
>>>    more SWAP space" errors, the computer locked
>>>
>>and must restart. 
>>
>>>    I am using the following command "my
>>>    $results=`/usr/local/excute/fire`;"
>>>
>>>     
>>>
>>>    what am i doing wrong?
>>>
>>>     
>>>
>>>    thanks,
>>>
>>>     
>>>
>>>    Diego