Perl Cgi-bin Error 500
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of questions I get from my visitors at thesitewizard.com, I can see that one of the most dreaded errors that newcomers to CGI face is the "500 Internal Server Error". It is one of the most uninformative error messages that can mean internal server error cgi python anything from an improper upload to a bug in the script. This article attempts to give cgi script internal server error you some concrete, practical steps that you can take to narrow down the problem and hopefully eliminate it. For the uninitiated, a "500 apache cgi-bin 500 internal server error Internal Server Error" is a message much like the common "404 File Not Found" message. You get the latter message in your browser when you try to access a non-existent web page. You get the "500 Internal Server Error"
Internal Server Error Cgi-bin Apache
message when you try to run a script with problems. For the purposes of this article, I am assuming that your CGI script is a Perl script, by far the most commonly available on the Internet. We will try to eliminate the most common errors first (and the easiest-to-eliminate ones): Location Did you upload your scripts into the right place? This is not as obvious as it may seem. Some servers are configured to run your CGI python cgi 500 internal server error scripts anywhere. Others will only run it when it is installed in a particular directory. It is not just a matter of creating a "cgi-bin" directory — for example, some hosts configure the server so that it will run scripts only from a particular directory outside the web directory structure (for security reasons). Your web page will still call the script "/cgi-bin/script.pl" but the server maps it to the actual directory. You will have to upload it in the right directory, regardless of what your web page calls it. Find out such information from your web host's documentation. File Upload Mode Did you upload your Perl script in ASCII mode? Your FTP client may have uploaded the script in binary mode if you did not take any special action. Perl scripts are ASCII files, and since different operating systems have different ways of representing the end of line character (eg Unix uses a line-feed, Windows uses a carriage-return and line-feed pair), it is important that you set the uploading method to ASCII, so that line-end translation is performed. Re-upload the script, this time making sure that it was uploaded in Text or ASCII mode. Do not use any auto-detection options since the FTP program might assume the extensions you are using for your scripts are for binary files. File Permissions Did you change the permissions on your script so that it
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Cgi Internal Server Error
developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a http://www.thesitewizard.com/archive/servererror.shtml community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Why does my Perl CGI script cause a 500 internal server error? up vote 3 down vote favorite I get a 500 internal server error when I try to run the code below http://stackoverflow.com/questions/2872040/why-does-my-perl-cgi-script-cause-a-500-internal-server-error in a web server which supports perl: #! /usr/bin/perl use LWP; my $ua = LWP::UserAgent->new; $ua->agent("TestApp/0.1 "); $ua->env_proxy(); my $req = HTTP::Request->new(POST => 'http://www.google.com/loc/json'); $req->content_type('application/jsonrequest'); $req->content('{ "cell_towers": [{"location_area_code": "55000", "mobile_network_code": "95", "cell_id": "20491", "mobile_country_code": "404"}], "version": "1.1.0", "request_address": "true"}'); my $res = $ua->request($req); if ($res->is_success) { print $res->content,"\n"; } else { print $res->status_line, "\n"; return undef; } But there is no error when I run the code below: #! /usr/bin/perl use CGI::Carp qw(fatalsToBrowser); print "Content-type: text/html\n\n"; print "\n"; print "
Hello World!
\n"; foreach $key (sort keys(%ENV)) { print "$key = $ENV{$key}
" ; } print "\n"; print "\n"; So I think there is some problem with my code. When I run the first perl script in my local machine with the -wc command, it says that the syntax is OK. Help me please. perl cgi share|improve this question edited May 21 '10 at 0:26 brian d foy 87.1k24150391 asked May 20
ManagerEponymRun yoursite.com from your PCMore...View all of our apps Your Cart Contact Us MenuCartContact FileChucker UserBase CornerStore VisitorLog ContactForm MailyList Eponym More... Web Apps Since 2004. Is your website boring? Kick it up a notch. Encodable apps give you easy drop-in functionality like file uploads, user accounts, paid subscriptions, protected pages, live chat, visitor logging, mailing https://encodable.com/internal_server_error/ lists, and more. All apps include: • Money-back guarantee • No monthly fees • Free http://askubuntu.com/questions/71496/why-does-my-perl-cgi-script-raise-an-internal-server-error-on-apache tech support • Easy setup (we can even do it for you!) 500 Internal Server Error ...and how to fix it. The short answer: this is usually a permissions error on your CGI script, which is easy to fix. Go to your FTP client, or your website file manager, and highlight or right-click on the CGI script. Then internal server choose Properties, or Permissions, or "Chmod", and set it to world-executable: that's 0755, or a+rx, or -rwxr-xr-x. Do NOT use 0777 (a+rwx or -rwxrwxrwx). And your cgi-bin directory itself should also be 0755, not 0777. The long answer: when running a Perl CGI script like FileChucker or UserBase, you may see the "Internal Server Error" message in your browser. The message will usually also say something like "please check the server's error-log for more internal server error information." You should do that -- the message printed to the error log will often tell you exactly what the problem is. The Apache error log, for example, is often located at /var/log/apache/error_log or /var/log/apache2/error_log (or sometimes "error.log"). If you don't have access to the error log, the next simplest thing to do is to make a backup copy of the script, then open the original and delete all of its contents, and add just these 3 lines to the file: #!/usr/bin/perl print "Content-type: text/plain\n\n"; print "testing...\n"; (Note: if the server is a Windows system, then replace the first line above with either #!perl or #!c:\path\to\perl.exe.) Now try to access the page in your browser again. If it works (you see "testing..." as its output) then you know that your server is at least configured properly for running Perl CGI scripts. If it doesn't work, then that may mean the problem is in the server configuration, rather than with your CGI script. (For example, are you sure you actually have Perl installed? Virtually all UNIX/Linux/OS X servers do, but Windows servers usually need to have it installed manually, from a free package like ActivePerl.) Assuming your server is configured properly for running CGI scripts, your problem may be one of these common causes for the Internal Server Error: Problems outside
communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Ask Ubuntu Questions Tags Users Badges Unanswered Ask Question _ Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Why does my Perl CGI script raise an internal server error on Apache? up vote 1 down vote favorite I've installed apache2 on Ubuntu 11.04, and localhost is working. I created a simple printenv.pl script and put it in the following directory $ mv printenv.pl /usr/lib/cgi-bin/ $ chmod +rx /usr/lib/cgi-bin/printenv.pl However when I go to http://127.0.0.1/cgi-bin/printenv.pl, I get a 500 Internal Server Error I checked the error log at /var/log/apache2, and this is what it says: [Mon Oct 24 11:04:25 2011] [error] (13)Permission denied: exec of '/usr/lib/cgi-bin/printenv.pl' failed [Mon Oct 24 11:04:25 2011] [error] [client 127.0.0.1] Premature end of script headers: printenv.pl Any suggestions on how I can fix this and run CGI scripts on my localhost? apache2 perl webapp-development share|improve this question edited Jan 10 '12 at 3:58 Jjed 9,40055385 asked Oct 24 '11 at 15:15 itcplpl 613 add a comment| 2 Answers 2 active oldest votes up vote 2 down vote I had this problem as well. It turned out that I had set the .pl files permissions to 775. Apache does not allow user writable. Try changing your .pl file permissions to 755. If that isn't it, check your web site permission settings in /etc/apache2/sites-available. share|improve this answer edited Jan 7 '12 at 2:25 James♦ 31.2k44133224 answered Jan 6 '12 at 4:36 John 212 add a comment| up vote 2 down vote I had this exact problem (with the exact same paths, directories, permissions, etc.) just a little while ago, and all of a sudden understood what I read somewhere in the Apach2 documentation about a week ago. That is this -