Knowledgebase: Perl/CGI
What
is Perl?
Perl stands for Practical Extraction and Report Language. It is the most
widely used language for CGI.
What
is CGl?
CGI stands for Common Gateway Interface. Essentially it is a place where
the Web server knows executable content lives.
How
do I program in Perl?
Unfortunatley Burningbulb does notprovide PERL programming support. Please
contact an experienced PERL programmer to assist you.
What
version of Perl is installed on the Burningbulb.net servers?
Note that the number after the dash is the installed version:
CGI.pm - 2.42
DB I -0.93
GD - 1.18
HTML - Parser - 2.18
MD5 - 1.7
MIME - Base64-2.05
Msql - Mysql - modules - 1.1831 [this is the module that allows perl to
communicate with msql]
ParallelUserAgent - 2.31
libwww-perl - 5.33
Where
can I get a Perl tutorial?
We recommend: www.whizkidtech.com or www.lies.com
I
need an example of a working CGI script. Could you provide one as an example?
Here is a basic cgi script written in PERL. If placed into your cgi-bin,
named test.cgi, and if proper permissions are set (chmod 755) (rwx rx
rx), it will run. It also must be uploaded in ascii.
#!/usr/local/bin/perl
print "Content-Type: text/html\n\n";
print "Hello world!\n";
What
permissions are my Perl scripts suppost to be set at?
They should always be chmod 755. Also, always remember to UPLOAD IN ASCII
What
do I have to name my Perl scripts?
INSIDE your cgi-bin, you can name your perl scripts anything BUT OUTSIDE
your cgi-bin, you MUST name them: .cgi
Like p1.cgi index.cgi etc. You may not name them .pl outside of the cgi-bin,
as they will never work like that :) Also, dont forget to UPLOAD IN ASCII
and CHMOD 755
If
I have a CGI script do I need extra SSH and do I have to configure it
using SSH?
No, 99% of scripts do not need any type of TELNET/SSH access.
I
placed a couple of CGI scripts on the server but they aren't working.
Whats wrong?
Unfortunately Burningbulb does not offer support for scripts outside of
what has already been installed on the server. Please contact a CGI programmer
for assistance.
When
I run my script I get an error that says "internal server error."
Can you fix that?
This error message means there is a problem with your script not with
the actual server. Please contact a CGI programmer for assistance.
Do
the servers allow me to run CGI scripts outside of my cgi-bin directory?
Yes. Iin order to have your CGI script run automatically outside of the
cgi-bin directory, it must have been named and saved with a ".cgi"
extension.
Can
I use CGI and Perl to read and write files?
Yes. You can use Perl and CGI to read and write files.
Can
I use any CGI script?
We allow users to write and run their own cgi-scripts, but we reserve
the right to disallow scripts that have harmful server side effects (ie.
a persistant script).
Can
I use Perl scripts in conjunction with your services?
Yes. Each account is setup with a cgi-bin directory from which perl programs
can be run.
Can
I run CGI scripts in my home directory?
Yes, but you MUST call them .cgi
You cannot name them .pl or any other extension.
Can
I use index.cgi as a default index like index.html?
Yes. However, if you also have an index.html file the .html will over
ride the index.cgi. You will need to delete the .html.
What
extension do I add to perl cgi scripts?
Inside your cgi-bin, you can pretty much name them anything (.pl or .cgi).
Outside the cgi-bin, you need to name them .cgi
Can
I install my own Perl modules?
No. We currently do not allow you to install Perl modules.
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