in reply to Re^4: show a message only during the sleep time
in thread show a message only during the sleep time

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.

Replies are listed 'Best First'.
Re^6: show a message only during the sleep time
by cc (Beadle) on Jul 24, 2005 at 21:59 UTC
    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]
      • the windows/unix is clearly newlines .. be sure to convert properly (it might be your ftp client, too--make sure it's doing ascii mode)
      • You don't have to have the whole thing inside of a here-doc
      • the internal server error is likely (if it's not the next item) due to lack of headers. What is in the web server's error_log? when run on cmd line, what is the exact output?
      • (this could also be the server error) You shouldn't be exit'ing a cgi program like that... just remove that line. the web server might be server erroring because of that return code.
[reply]
[d/l]
        I removed this line:
        exit($cc);
        and still get the same error in the browser

        from command line:
        # perl ntop4.cgi                                                      
+       
[Mon Jul 25 14:27:27 2005] ntop4.cgi: Unrecognized escape \d passed th
+rough at ntop4.cgi line 53.
<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>
Mon Jul 25 14:27:28 2005  Initializing gdbm databases
<font face="arial,helvetica" size=2 color="#006600">status:
+</font>  ntop<br><br>
<font face="arial,helvetica" size=2 color="#FF0000">
pls do not forget to shutdown, if you're not using </font>

<p><br></p>pls wait for 5 seconds before you click on this link:
<br><br><a href="https://192.168.0.3:3001"><b><U>NTOP</b></U></a>
<p><br></p><p><br></p><p><br></p><p><br></p>Maintained by <a href="mai
+lto:admin@domain.net"><font face="arial,helvetica" size=3>
admin</a></font>
</center></body></html>

        [download]

        Apache error log says:
        [Mon Jul 25 14:30:04 2005] [error] [client 192.168.0.105] [Mon Jul 25 
+14:30:04 2005] ntop4.cgi: Unrecognized escape \\d passed through at /
+usr/local/www/cgi-bin/ntop/ntop4.cgi line 53.
[Mon Jul 25 14:30:04 2005] [error] [client 192.168.0.105] malformed he
+ader from script. Bad header=<html>: ntop4.cgi

        [download]
        greetings cc
[reply]
[d/l]
[select]

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