in reply to Re^2: show a message only during the sleep time
in thread show a message only during the sleep time

Well, you have write the "..." javascript -- the elipsis was just a place holder (and note that we want to add javascript code by using the <body onLoad=""> attribute, NOT embed the body tag inside script tags). Also, note the clunkiness of print statements for this.. (and this is pretty general advice) at the minimum, at least use here-docs, and also keep in mind a more robust solution like Template::Toolkit or HTML::Template. So, back to the problem at hand, this is what i was envisioning: 
print <<EOF;
<html>
<head>
  <title>ntop startup script</title>
  <STYLE TYPE='text/css'>
    h3 { color: red }
    a { text-decoration: none; font: bold 14pt/16pt Ariel, serif }
    a:hover { color: red } /* when mouse is over link */
  </style>
  <script language="javascript">
    function hideWaitMsg(){
      var obj = getElementById('wait_msg_text');
      obj.visible = false;
    }
  </script>
</head>
<body bgcolor='#c0c0d0' onLoad="hideWaitMsg()">
  <center>
  <p><br></p>
  <p><br></p>

  <div id="wait_msg_text">pls wait, ntop will be started</div>
EOF

[download]
That's the basic setup .. note that i just guessed at the javascript code in the hideWaitMsg() function -- that part is left as an excercise for the reader.

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Re^4: show a message only during the sleep time
by cc (Beadle) on Jul 24, 2005 at 19:17 UTC
    thanks a lot !

    but I get:
    Software error:

Can't find string terminator "EOF" anywhere before EOF at /usr/local/w
+ww/cgi-bin/ntop/ntop4.cgi line 20.

    [download]
    my system has a problem with this line:
    print <<EOF;

    I have:
     
# pkg_info | grep perl
mod_perl2-2.0.1,2   Embeds a Perl interpreter in the Apache2 server
perl-5.8.7          Practical Extraction and Report Language

    [download]
    do I need to install additional perl module ?
[reply]
[d/l]
[select]
      well, obvious question is, do you have a 'EOF' line in your code? :) Note that the string "EOF" is arbitrary, too. Search for "here-document" in perldoc perldata for more info, but two simple examples: 
        print <<EOF;
Hello World !!!
EOF
  print <<BLAH;
Hello
   World
     !!!
BLAH

      [download]
      If you still have problems, please post the code along w/the error message.
[reply]
[d/l]
[select]
        I've got this error message before,
        because I must edit this sript directly on the unix machine.
        If I edit on the windoze and transfer to unix,
        I get this error message.
        anyway this script works only from command line:
        #!/usr/bin/perl -w

use strict;
use warnings;
use CGI;
my $query = new CGI;
use CGI::Carp qw(fatalsToBrowser);

$|=1;
print <<EOF;
<html>
<head>
  <title>ntop startup script</title>
  <STYLE TYPE='text/css'>
    h3 { color: red }
    a { text-decoration: none; font: bold 14pt/16pt Ariel, serif }
    a:hover { color: red } /* when mouse is over link */
  </style>
  <script language="javascript">
    function hideWaitMsg(){
      var obj = getElementById('wait_msg_text');
      obj.visible = false;
    }
  </script>
</head>
<body bgcolor='#c0c0d0' onLoad="hideWaitMsg()">
  <center>
  <p><br></p>
  <p><br></p>

  <div id="wait_msg_text">pls wait, ntop will be started</div>
EOF

system `/usr/local/www/cgi-bin/ntop/ntop.sh stop` or die "cannot stop 
+ntop: $!";
sleep(8);
my $cc = `sudo /usr/local/www/cgi-bin/ntop/ntop.sh start` or die "cann
+ot start ntop: $!";
print "<font face=\"arial,helvetica\" size=2 color=\"#006600\">status:
+</font> ",$cc,"<br><br>\n";

print "<font face=\"arial,helvetica\" size=2 color=\"#FF0000\">
pls do not forget to shutdown, if you're not using </font> \n";
print "\n";
print "<p><br></p>";
print "pls wait for 5 seconds before you click on this link:\n";
print "<br><br>";
print "<a href=\"https://192.168.0.3:3001\"><b><U>NTOP</b></U></a>\n";
print "<p><br></p>";
print "<p><br></p>";
print "<p><br></p>";
print "<p><br></p>";
print "Maintained by <a href=\"mailto:admin@\domain.net\"><font face=\
+"arial,helvetica\" size=3>
admin</a></font>\n";
print "</center>";
print "</body>";
print "</html>";

exit($cc);

        [download]

        In the browser I get:
        "Internal Server Error"
        It seems the whole HTML code must be inside of
        print <<EOF;
        EOF
[reply]
[d/l]

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