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CGI Applications     
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Overview
CGI stands for "Common Gateway Interface,".
What this means is that they are programs that are commonly run
on a server when a web browser invokes them from a web page.
This means that the web browser does not need to have any fancy
viewers or plugins for the CGI program to run.
The CGI Scripts provided for you are basically
self-contained. There is little, if anything, that needs to be
done to them to make them operate. The complicated part
for most users trying to add cgi scripts is file paths and permissions.
Even experienced programmers and webmasters struggle at times
to properly configure cgi programs. If you are a Novice User
with limited knowledge in this area, it is strongly recommended
that you first become highly proficient with HTML and web page
creation before attempting to do this yourself.
Adding
CGI Scripts     
We provide many CGI scripts with your account
which you will find in a directory called cgi-bin.
We do not provide free support for CGI scripts which we do not
install on your server, so if you wish to add new CGI scripts
you may want to do a bit of research on them first unless you
are familiar with them already. Adding new scripts requires a
more advanced knowledge of programming terms and skills and is
not generally recommended for Novice Users.
If you are an experienced user, (or a novice
who myopically decides to install your own scripts) you can access
more technical cgi information in the Advanced User section of this
manual.
Where
to Put CGI-bin Scripts
Put your cgi-bin scripts in the www subdirectory
named "cgi-bin".
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Quick
Guidelines For Using SSI's     
No! We are not talking about a Social Security
Income check from uncle Sam! SSI stands for Server Side
Include... and it means that you can insert the contents of another
web page, program or file into the web page that adds the Server
Side Include.
A couple of important points you need to follow
for SSI to work on your domain.
1. The web page that adds the SSI
instruction to include another page or program MUST end with
.shtml or .sht rather than .html or .htm.
2. The URL to the page you want to insert
must be relative to the current web page rather than a full URL.
The SSI feature on your domain is limited
to what is known as a "exec cgi command". This
simply means that you can insert into any page the ability to
execute any cgi program. The format for a Server Side Include
is:
<!--#exec cgi="/cgi-bin/THE-PROGRAM-NAME-HERE.cgi"-->
One quick observation... do you notice how
this SSI instruction uses a *relative* URL (/cgi-bin/....) instead
of a FULL URL? This is very important to keep in mind when using
SSI.
For example, let's say we want to include
a counter program (that has the name, counter.cgi) on our home
page, called normally index.html. Remember! Because
we want to add a SSI instruction in our home page, it must end
with .shtml or .sht. In this case, we would name it index.shtml.
The counter program is named counter.cgi,
and like all cgi programs, this program is found in the cgi-bin
directory of your domain.
So the SSI instruction to include on your
web page, where you want the counter to be displayed is:
<!--#exec cgi="/cgi-bin/counter.cgi"-->
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Permission Settings for Provided Scripts
All of the cgi scripts provided as part of your
domain have been setup and configured properly. As mentioned
earlier, one of the most difficult tasks of dealing with CGI
programs is correct settings of file permissions. Listed
below are the default permission settings for the installed CGI
programs.
|
wwwboard
Permission |
|
bbs dir |
chmod 755 |
|
bbs/messages |
chmod 755 |
|
bbs/index.sht |
chmod 666 |
|
bbs/data |
chmod 666 |
|
cgi-bin/wwwboard.pl |
chmod 755 |
|
Guestbook
Permission |
|
Guestbook dir |
chmod 755 |
|
Guestbook/guestbook.cgi |
chmod 755 |
|
Guestbook/guestbook.setup |
chmod 666 |
|
Guestbook/guestbook.html |
chmod 666 |
|
Free for all Links Permission |
|
links dir |
chmod 755 |
|
links/links.htm |
chmod 666 |
|
cgi-bin/links.pl |
chmod 755 |
|
Graphic Counter Permission |
|
counter dir |
chmod 775 |
|
counter/logs |
chmod 777 |
|
counter/ all other files |
chmod 666 |
|
cgi-bin/counter |
chmod 755 |
|
Cgi-bin always chmod 755 all scripts chmod 755 in
main bin |
|
cgi-bin/counters (text counter) |
chmod 755 |
|
Random
Text |
|
random dir |
chmod 775 |
|
random/random.txt |
chmod 666 |
|
Password
Admin |
|
password dir |
chmod 755 |
|
All password files |
chmod 666 |
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Cgiwrap--Secure Server CGI Wrapper
Your domain includes secure server access, allowing
you to collect customer information in a secure fashion.
Since you might also want to run a cgi program in secure mode,
we make available Cgiwrap - a system that allows safe, secure
use of cgi programs. We have created a sort short cut for this
as well.
When you want to use a cgi script or program
in secure mode, you
must change the URL to follow this format:
https://machine.safe-order.net/cgi-domain/script.cgi
Machine - that
is the machine name that is hosting your domain.
cgi-domain - replace
the word domain with your domain name.
script.cgi - use
the name of the cgi script located in your cgi-bin directory.
For nph-style scripts, use nph-cgiwrap or nph-cgiwrapd
instead.
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Preconfigured
CGI-bin Scripts We Provide
This section contains all of the information
you need to create your web pages for use with the CGI scripts
we provide for you as part of your account. These scripts are
recommended for users with Advanced knowledge and experience with HTML and web page creation.
NOTE: Due to
the width restrictions of this page some code strings appear
broken. Do NOT duplicate the breaks. Enter code strings
in one continual line.
FormMail.
FormMail is a generic www form to e-mail
gateway, which will parse the results of any form and send them
to the specified user. This script has many formatting and functional
options, most of which can be specified through the form. This
means you dont need any programming knowledge, nor do you
need multiple scripts for multiple forms. This also makes FormMail
the perfect system wide solution for allowing users form-based
user feedback capabilities without the risks of allowing freedom
of CGI access.
Note: If you wish to use FormMail on a
secure server please see the special
instructions here.
There is only one form field that you must
have in your form, for FormMail to work correctly. This is the
recipient field. Other hidden configuration fields can
also be used to enhance the operation of FormMail on your site.
The action of your form needs to point towards
this script, and the method must be POST in capital letters.
Here's an example of the form fields to put in your form:
<FORM METHOD=POST ACTION="http://yourdomain.com/cgi-bin/formmail.cgi">
<input type=hidden name="recipient"
value="whoever@yourdomain.com">
<input type=hidden name="subject"
value="Order">
<input type=hidden name="return_link_url"
value="http://yourdomain.com/">
<input type=hidden name="return_link_title"
value="Back to Main Page">
The following are descriptions and the
proper syntax for fields you can use with FormMail.
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Recipient Field
Description:. This
form field allows you to specify to whom your form results will
be mailed Most likely you will want to configure this option
as a hidden form field with a value equal to that of your email
address.
Syntax: <input
type=hidden name="recipient" value="email@yourdomain.com">
Subject Field
Description: The
subject field will allow you to specify the subject that you
wish to appear in the email that is sent to you after the form
has been filled out. If you do not have this option turned on,
then the script will default to a message subject: "WWW
Form Submission".
Syntax: If you
wish to choose what the subject is:
<input type=hidden name="subject"
value="Your Subject">
To allow the user to choose a subject:
<input type=text name="subject">
Email Field
Description: This
form field will allow the user to specify their return email
address. If you want to be able to return e-mail to your user,
it is strongly suggested that you include this form. This will
be put into
the From: field of the message you receive. If
you want to require an email address with valid syntax, add this
field name to the 'required' field.
Syntax: <input
type=text name="email">
Realname Field
Description: The
realname form field will allow the user to input their real name.
This field is useful for identification purposes and will also
be put into the From: line of your message header.
Syntax: <input
type=text name="realname">
Redirect Field
Description: If
you wish to redirect the user to a different URL, rather than
having them see the default response to the fill-out form, you
can use this hidden variable to send them to a pre-made HTML
page.
Syntax: To choose the URL they will
end up at:
<input type=hidden name="redirect"
value="http://yourdomain.com/to/file.html">
To allow them to specify a URL they wish
to travel to once the form is filled out:
<input type=text name="redirect">
Required Field
Description: You can require certain
fields in your form to be filled in before the user can successfully
submit the form. Simply place all field names that you want to
be mandatory into this field, separated by commas. If the required
fields are not filled in, the user will be notified of what they
need to fill in, and a link back to the form they just submitted
will be provided.
To use a customized error page, see 'missing_fields_redirect'
Syntax: If you want to require that
they fill in the email and phone fields in your form, so that
you can reach them once you have received the mail, use the syntax
like:
<input type=hidden name="required"
value="email,phone">
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Env_report Field
Description: Allows
you to have Environment variables included in the email message
you receive after a user has filled out your form. Useful if
you wish to know what browser they were using, what domain they
were coming from or any other attributes associated with environment
variables. The following is a short list of valid environment
variables that might be useful:
REMOTE_HOST - Sends the hostname making
the request.
REMOTE_ADDR - Sends the IP address of the
remote host.
HTTP_USER_AGENT - The browser the client
is using.
(Note: In our case, both REMOTE_HOST
and REMOTE_ADDR are the same, since our servers don't do the
reverse DNS lookup needed to generate the true REMOTE_HOST string).
Syntax: If you
wanted to find all the above variables, you would put the following
into your form:
<input type=hidden name="env_report"
value="REMOTE_HOST,REMOTE_ADDR,HTTP_USER_AGENT">
Sort Field
Description: This
field allows you to choose the order you would like your variables
to appear in the email form that FormMail generates. You can
choose to have the field sorted alphabetically or specify a set
order in which you want the fields to appear in your email message.
By leaving this field out, the order will simply default to
the order in which the browsers send the information to the script
(which is usually the exact same order as they appeared in the
form). When sorting by a set order of fields, you should include
the phrase "order:" as the first part of your value
for the sort field, and then follow that with the field names
you want to be listed in the email message separated by commas.
Syntax: To sort alphabetically:
<input type=hidden name="sort"
value="alphabetic">
To sort by a set field order:
<input type=hidden name="sort"
value="order:name1,name2,etc...">
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Print_config Field
Description: print_config
allows you to specify which of the config variables you would
like to have printed in your e-mail message. By default, no config
fields are printed to your email. This is because the important
form fields, like email, subject, etc. are included in the header
of the message. However some users have asked for this option
so they can have these fields printed in the body of the message.
The config fields that you wish to have printed should be in
the value attribute of your input tag separated by commas.
Syntax: If you
want to print the email and subject fields in the body of your
message, you would place the following form tag:
<input type=hidden name="print
config" value="email, subject">
Print_blank_fields Field
Description: print_blank_fields
allows you to request that all form fields are printed in the
return HTML, regardless of whether or not they were filled in.
FormMail defaults to turning this off, so that unused form fields
aren't emailed.
Syntax: <input
type=hidden name="print_blank_fields" value="1">
Title Field
Description: This
form field allows you to specify the title and header that will
appear on the resulting page if you do not specify a redirect
URL.
Syntax: If you
wanted a title of 'Feedback Form Results':
<input type=hidden name="title"
value="Feedback Form Results">
Return_link_url Field
Description: This
field allows you to specify a URL that will appear, as return_link_title,
on the following report page. This field will not be used if
you have the redirect field set, but it is useful if you allow
the user to receive the report on the following page, but want
to offer them a way to get back to your main page.
Syntax:
<input type=hidden name="return_link_url"value="http://
yourdomain.com/index.htm">
Return_link_title
Description: This
is the title that will be used to link the user back to the page
you specify with return_link_url. The two fields will be shown
on the resulting form page as:
Back to Main Page
Syntax: <input
type=hidden name="return_link_title" value="Back
to Main Page">
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Cgiemail
Cgiemail is another form processing script, totally
different than FormMail. It is a program written in the C language
that takes the contents of fill-in boxes on a form and emails
them to a specified location. In addition to the form specification
in the .html file, a mail specification in a .txt file is required
to format the resulting email message.
We provide the cgiemail in the cgi-bin directory
of your server. You need to have an action in your order.htm
file to call it. It should look like this:
<form method=post action="http://www.yourdomain.com/cgi-bin/cgiemail/order.txt">
Details are provided below. While there are
a number of subsections below this one, they all work together
and are meant to be read from start to finish.
order.htm
Look for a file in your www directory called
order.htm. This is our example form we put on your site that
shows how a form should be configured to work with Cgiemail.
Look at it in a browser, and download it to your hard drive using
FTP so you can see how it works. If you've never dealt with HTML
forms before, don't worry, they're easy to create and understand.
The form prompts the user for data which is
sent to the server as simple key-value pairs. Each <input>
tag
specifies a record. The key is given by
the name attribute, and the value is given by the value attribute.
The type attribute tells the browser what kind of data to expect.
Now, try looking at the example.
Please note that the hidden items are
used to transmit critical info to Cgiemail. They provide the
location of the success file, the name of the person the results
should be sent to, and the subject of the form. When making your
own forms, you may want to change the email address in the "required-to"
field, and likely the subject in the "subject"
field. The first item tells Cgiemail what to show the user after
successfully completing the form. You can, but don't need to
customize this.
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After that come the items that are actually
presented to the user. You'll want to use type=text input
items with cgiemail: it's a simple tool. The size=60 tells
the browser how big to make the box. The name=something
is required in each input tag, otherwise the browser wouldn't
know how to send the data to the server. The value="
" attribute is correct in most cases, unless you want
a default value in the form.
Note that if a field begins with required-,
cgiemail will require that the user enter a value for this field.
This is particularly useful if you want to require a user to
submit their email address.
When the user presses the Submit button,
the data goes to our machine where cgiemail starts doing something
with it. What is does is controlled by the order.txt file discussed
below.
By the way, you can name your HTML form
anything you want to.
order.txt
Now that we have all this data, what do we do
with it? Mail it, of course! But for flexibility, cgiemail requires
that you create a mail.txt file to show it what to send.
(If you didn't want flexibility you'd use a mailto link.) The
program will read this file, perform substitutions, and pass
it to the mail system.
Make sure that you upload mail.txt
in ASCII mode. Failure to upload mail.txt in
ASCII mode will generate the message:
"Server Error: The server encountered
an internal error or misconfiguration and was unable to complete
your request."
There is already an example order.txt document
in the forms directory in your www directory.
By the way, there's nothing magical
about the name order.txt. Feel free to call it mail1.txt or form1.mail,
or whatever suits you, as long as the form has the correct name
for what you uploaded.
Note that the first several lines are
mail headers. You probably shouldn't change that part, or the
corresponding parts in your form. In particular, there must be
a To: header or the mail won't go anywhere!
What cgiemail does is simply replace
every string that looks like [key] with the value the
user typed into the field with name=key. That's all. You
can lay out your form as is best for your users, but lay out
your mail.txt as is best for you to read. You can even insert
gobs of text to help format the output. Only the [key]
parts will be replaced by cgiemail.
Cgiemail does not report environmental
variables like FormMail will, but other than that, it is an excellent
program, allowing you more flexibility in the way you want your
data returned by the form.
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Secure
Server Order Forms
Normally, any text (such as your credit card
number) sent from your browser to the web server is sent as plain
text. This means that a hacker could potentially intercept (however
unlikely) the information sent from your browser and read it.
However, by using the secure server, the information is encrypted
before it is sent from your browser. It would be practically
impossible for anyone to decrypt it without knowing the key.
Please use the secure server only when necessary, as when requesting
sensitive information from your visitors.
The domains hosted by us are housed on many
different computers, each of which have a different machine name.
To find out what machine name to use for your secure order access
calls, check the faq file of your domain at:
http://www.yourdomain.com/faq.html
Each server has its own safe-order site, and
although you will be putting your form on your own domain, it
must be called through the safe-order server in order for the
form to be secure.
To do this, create your form as usual and
put it somewhere in your www directory. You can put your form
anywhere you want to, but for this example, let's assume the
normal URL for your form can be accessed from a browser with
this URL:
http://www.yourdomain.com/signup/secureform.html
To call the form through the secure-order
server, you need to use the following URL to access your pages
via the secure server (even though your form resides on your
own domain space):
https://machinename.safe-order.net/yourdomain/signup/secureform.html.
That would be the URL you would put as an <HREF>
to link to your form from whatever page you have your visitors
link from. Don't forget the "s" in "https."
To call scripts in your cgi-bin via the secure
server you should use a URL like this:
https://machinename.safe-order.net/cgi-yourdomain/your-cgi.cgi
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Special instructions for using FormMail.cgi with the Secure
Server
If you are using formmail.cgi through the secure
server, you can still place your form anywhere on your webspace
you want to, but you MUST use the following URL as the
ACTION of your form:
https://machinename.safe-order.net/cgi-bin/formmail.cgi
Here's an example of how the first parts
of your form might look:
<FORM METHOD=POST ACTION="https://machinename.safe-order.net/cgi-bin/formmail.cgi">
<input type=hidden name="recipient"
value="whoever@yourdomain.com">
<input type=hidden name="subject"
value="Order">
<input type=hidden name="return_link_url"
value="http://yourdomain.com/">
<input type=hidden name="return_link_title"
value="Back to Main Page">
It is still important that you call your order
page through a secure URL in order for it to work properly. You
must use:
https://machinename.safe-order.net/yourdomain/order.htm.
If you call formmail.cgi through the secure server,
you must also call the order form through the secure server.
Otherwise, a "bad referrer" message will result.
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Guestbook
http://yourdomain.com/vbpro/
Put your domain name instead of "your
domain.com"
Free-For-All
Links Page
Free For All Link Page allows you to set up a
web page which your users can then add links to in specified
categories. The newest links are added to the top of each category.
A running total of the number of links present, as well as the
time when the last link was added, is shown at the top of the
page. Your preconfigured Free For All Links page is already set
up on your server at http://www.yourdomain.com/links/links.htm.
The only configuration you may want to do
is to customize the look of the links.htm page. Just leave the
method and input tags the way they are. If you decide to change
the category names, you must do so in the links.htm document,
AS WELL AS the links.pl file in your cgi-bin.
Random
Text Generator
This script is preconfigured for your server.
There is a directory in your www directory called "random."
Inside that directory is a file called random.txt. Just download
this file to your hard drive and edit it with any random text
you would like placed in an html document. Remember to keep the
%% separator between quotes. You can use any html formatting
tags you want to, including <href> tags so you can configure
it as a random link generator. You can put in as many quotes
as you wish. Upload the random.txt file to your server in the
same location you found it, remembering to upload it in ASCII
or text mode.
The script uses SSI (Server Side Includes)
so the page you want to use random text on must have the .sht,
.shtm, or .shtml extension. On your page, just put this tag wherever
you want the random text to appear:
<!--#exec cgi="/cgi-bin/randomtext.cgi"-->
That's all there is to it!
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WWW Board
WWW Board is a threaded World Wide Web discussion
forum and message board, which allows users to post new messages,
follow-up to existing ones and more. It is already preconfigured
for your server. Just go to:
http://www.yourdomain.com/bbs to post your
messages there.
There are several options you may want to
configure. First of all, the index.sht file in the bbs directory
can be customized any way you wish as long as you leave the method
and input tags the way they are.
Additionally, here are some options
contained in the wwwboard.pl script itself (located in your cgi-bin
directory) which you may want to change, depending on your needs:
$show_faq = 1;
This option allows you to choose whether or not
you want to display a link to the FAQ on every individual message
page or not. It defaults to 1 and the link will be put in at
the top of the message along with links to Followups, Post Followup
and Back to $title. Setting this to 0 will turn it off, and keeping
it at 1 will keep the link. You need to create a faq.html file
and put it inside the bbs directory. The FAQ can contain any
information you want to give your visitors about how the board
works, your organization, types of postings that will be allowed,
etc.
$allow_html = 1;
This option lets you choose whether or not you
want to allow HTML mark-up in your posts. If you do not want
to allow it, then everything that a user submits that has <>'s
around it will be cut out of the message. Setting this option
to 1 will allow HTML in the posts and you can turn this option
off by setting it to 0.
$quote_text = 1;
By keeping this option set to 1, the previous
message will be quoted in the followup text input box. The quoted
text will have a ':' placed in front of it so you can distinguish
what had been said in the previous posts from what the current
poster is trying to get across. Setting this option to 0 will
leave the followup text box empty for the new poster.
$subject_line = 0;
There are three options for the way that
you can display the subject line for the user posting a followup.
Leaving
this option at 0 which is the default value,
will put the previous subject line into the followup form and
allow users to edit the subject however they like. Setting this
option to 1, however, will quote the subject, but simply display
it to the user, not allowing him or her to edit the subject line.
The third and final option can be achieved by setting the $subject_line
variable to 2. If it is set to 2, the subject will not be quoted
and instead the user will be prompted with an empty subject block
in their followup subject line.
$use_time = 1;
This option allows you to choose whether or not
you want to use the hour:minute:second time with the day/month/year
time on the main page. Day/Month/Year will automatically be placed
on the main wwwboard.html page when a new entry is added,
but if you leave this variable at 1, the hour:minute:second time
will also be put there. This is very useful for message boards
that get a lot of posts, but if you would like to save space
on your main page, you can set this to 0, causing the hour:minute:second
display not to be added.
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Search.cgi
Search will look at all your html pages
for words you enter, and return all pages on a list with links.
This program is completely configured and ready to run, but for
Search.cgi to return a response, it need to be activated. This
is easily done by logging in via telnet and at the prompt after
login type the following command:
chmod +r /www/yourdomain
Now you can access search.cgi with the
following URL: http://yourdomain.com/cgi-bin/search.cgi.
There is a configuration file called search_define.pl
which accompanies search.cgi and sets up the variables for it.
You can customize which files you wish to exclude from searches,
and also the cosmetics of the search and result. pages.
Single
Page Shopping Cart (on qualifying
accounts only)
Lets Take A Order
shop cart - allows 25 item cart to be easily created via a web
page. For instructions for use go to
http://your-domain-here.com/lto.htm
Page Counters
There are 3 different types of page counters
you can place on your pages. The first is a no-frills graphical
counter:
To use this one, put the following tag somewhere
on your page, but change the yourpage.htm to be the address of
the actual page you are putting this counter on. Also, don't
break up the tag like we did. We had to do that to fit it on
the page. The width=5 part refers to how many digits you want
in your counter. This counter is not as reliable as the others
available.
<IMG SRC="/cgi-bin/nph-count?
width=5&link=http://yourdomain/yourpage.htm">
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Virtual Publisher Counter (on qualifying accounts only).
Another page counter you may want to use
is the Virtual Publisher Counter (on qualifying accounts only).
It is another graphical counter, but it will give you all kinds
of stats such as time and date of visits, and domains that your
visitors come from.
To put this counter on your page, insert the
following tag somewhere... please note that the line had to be
broken up to fit on this page, but the line should not be broken
on your page.
<img src="http://yourdomain.com/cgibin/counter/counter.cgi?
fnam=testcount&viz=yes&isinv=yes&setup=/home/www/
yourdomain/cgi-bin/counter/setup.txt">
Where you see fnam=testcount,
put in the name of the page you want to put the counter on instead
of the word testcount. The viz=yes part tells the counter
script whether your counter should be invisible or not. If you
want the counter to be visible, leave it as yes. If you want
it to be invisible, make it say viz=no.
The isinv=yes part is for whether
you want the counter to be inverted or not. The default as below
means that it is inverted (as shown in the graphic above). If
you wish for it to be just a black number against a white background,
make it say isinv=no.
Another great thing about this one is that
you can access the log files for each page you have the counter
on, and also reset the count to any number you wish. To see the
instruction page, go to http://yourdomain.com/counter/
with your web browser.
Please be aware that a count file will
not be created until a page is accessed for the first time.
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Text-based Counter
Finally, the simplest kind of page counter is
a text-based counter. It uses SSI so the page you are putting
it on must have the .sht, .shtm, or .shtml extension. It will
look like whatever text and size attributes you give it on your
page. The tag looks like this:
<!--#exec cgi="/cgi-yourdomain/counters/counter.cgi"-->
After you've put the counter on your
page, look at it with your browser. If you don't see the counter
the first time, hit reload. Then you should see the number 1.
If you want to change the page count, FTP to your site, and look
in the counters directory in your cgi-bin. There will be a file
there with the name of whatever page you placed this counter
on. Just upload a new text file with a new number on it, and
that will be the new count on the page next time you hit reload.
Remember to upload the file in ASCII or text format.
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