Frequently Asked Questions Frequently Asked Questionshttpd stands for HyperText Transfer Protocol (HTTP) Daemon. HTTP is a protocol with the lightness and speed necessary for a distributed collaborative hypermedia information system.
How do I install NCSA httpd?
Read documentation on NCSA httpd Installation.
What is CGI?
CGI stands for Common Gateway Interface. You can read an introduction and an overview.
/Web/httpd/Unix/ncsa_httpd/cgi/.
How do I setup a clickable imagemap?
Read the
documentation on the imagemap script and a
tutorial on graphical information maps.
How do I manage user for authentication?
Read the documentation on
managing users and a
tutorial on user authentication.
How can I perform keyword searches?
You can use WAIS as a back-end search engine. Herein, a
tutorial on WAIS and HTTP integration.
How do I set up server-side includes?
You can use server-side includes, to provide data to clients on-the-fly.
For example, the current date or the size or last modification date for a
file. Check out a
tutorial on server-side includes.
How to add environment variables?
You can add environment variables when you use POST method.
For more infomation, please read CGI
Environment Variables
What else can I do?
Read the complete documentation on
server administration and some provided step-by-step
tutorials.
Where can I find httpd for MS-Windows/NT?
For information on MS-Windows httpd, please read
this page.
For information on Windows NT httpd, please read this page
.
Note: Since these server packages are NOT developed by NCSA, we
are not responsible for them.
This means the program that performs such "action" is placed in the
directory that is not declared in ScriptAlias
in your
srm.conf file. Please move your program to the script directory.
Or you may define your
AddType
When I submit a form, it gave me 501 error...
The error message says:
We are sorry to be unable to perform the method POST to non-script
at this time.
AddType application/x-httpd-cgi .cgi
in your srm.conf file and change the name of your executable file from
"filename" to "filename.cgi".Can't start server with "gid error"/"setgroupts"
This may caused by the values in
User directive
and Group directive.
The default values for these two directives are all set to -1.
These values are not valid on some systems. Please consult with
your system administrator to find the valid values.
Can I have hidden variables in forms?
Actually this is handled by the browser (e.g. NCSA Mosaic). In any
case, there is an
example with hidden variables in the documentation.
Can I have multiple submit buttons?
This is also handled by your browser. NCSA Mosaic for X (v2.5 soon to be released)
will have support for multiple submit buttons. See an
example to learn how to use them.
What is PGP/PEM encryption?
PGP and PEM are programs to allow you and a second party to communicate in a
way which does not allow third parties to read your messages. For more
information, there is a PGP/PEM FAQ.
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