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Top Forums Shell Programming and Scripting Perl CGI. no output until backend script is done Post 302444849 by honglus on Friday 13th of August 2010 03:07:42 AM
Old 08-13-2010
Perl CGI. no output until backend script is done

It is a basic Perl CGI question, I want to print out "Processing ... " while backend script /script/wait.pl is still running.

But acctually, nothing appeared in browser untill /script/wait.pl finished.


Code:
 
print "Content-type:text/html\r\n\r\n";
print '<html>';
print '<head>';
print '</head>';
print '<body>';
print '<h2>Processing ... </h2>';
`/script/wait.pl`;
print '</body>';
print '</html>';

 

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Extratags(3pm)						User Contributed Perl Documentation					    Extratags(3pm)

NAME
CGI::Extratags - Useful Extensions for the CGI Module SYNOPSIS
use CGI::Extratags; $cgi = new CGI::Extratags; print $cgi -> email ('racke@linuxia.de'); print $cgi -> jump ('CONTACT', 'contact us'); print $cgi -> mark ('CONTACT', $cgi -> h2 ('How to contact us')); print $cgi -> row ('Date', 18, 1, 1966); print $cgi -> recall ('Debian CD', artnum => '0-123456'); DESCRIPTION
CGI::Extratags adds several useful methods to the CGI class. email ADDRESS print $cgi -> email ('racke@linuxia.de'); Produces HTML code for a link to an email ADDRESS. jump MARK TEXT print $cgi -> jump ('CONTACT', 'contact us'); Produces HTML code for a link pointing to a target within the current document. mark NAME TEXT print $cgi -> mark ('CONTACT', $cgi -> h2 ('How to contact us')); Generates target NAME for hyperlinks. row [ITEM ...] print $cgi -> row ('Date', 18, 1, 1966); Produces HTML code for a table row with ITEM arguments as cell contents. recall TEXT [NAME [VALUE]] ... foreach my $num (sort (keys %artmap)) { print $cgi -> recall ($artmap{$num}, artnum => $num); print $cgi -> br; } Produces a link to the script itself labeled with TEXT. The NAME/VALUE pairs will be passed as parameters. AUTHOR
Stefan Hornburg, racke@linuxia.de SEE ALSO
perl(1), URI::Escape(3), CGI(3). perl v5.8.4 2004-07-11 Extratags(3pm)
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