I have two sort of answers:
1. Really portably, I don't know. On debian /etc/alternatives/www-browser is a symlink to the configured system browser. It gives no hints on what arguments to provide, though most browsers will probably accept a plain url. You may want to check out Selenium which has methods for starting most browsers on a lot of systems. It's in Java, but you may be able to learn some tricks. See also WWW::Selenium for the perl interface.
2. What do you mean by "check an url once a while if a given calculation is performed"? If you just want to check a url periodically for changes, you can use sleep, or - on unix - use a crontab entry to run the program periodically. You may also want to check WWW::Mechanize which will give you a nice interface for programmatic web scraping (it's much easier to install than WWW::Selenium but it does not support javascript and some other things that may or may not be relevant to you).
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Using sleep is fine if you want to sleep some number of whole seconds. If you need finer control over the sleep time, use Time::HiRes (usleep or nanosleep).
Update: Your other question might be answered in opening browser from script.
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[d/l]
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If you're on windows you can use the value of the registry key 'HKEY_CLASSES_ROOT\http\shell\open\command' which gives the default program for handling http=the browser,using a module such as Win32::TieRegistry,and then use Win32::OLE to pass the url to the browser.Let'say that the default browser is IE so :
$IE=Win32::OLE->new("InternetExplorer.Application") or die "could not
+start browser";
$IE->{visible}=1;
$IE->Navigate("$url");
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[d/l] |
I would also like to add that I have been studying lwp for some web automation but have not yet come to see a method adressing my problem above. Thanks, Sina | [reply] |