Linux Lab 8.pdf

Faculty of ESBE
Telecommunications & Internet Engineering
Apache Server Configuration
1. Now lets setup a web server. Fortunately, Linux ships with the apache web server that is preconfigured.
Login as root, type the following to start the service:
/etc/rc.d/init.d/httpd start
2. Open your web browser to "http://". You should see a generic introduction web
page.
3. Change to /etc/httpd/conf/ folder.
4. Make a backup of the Apache configuration file, “cp httpd.conf httpd.bak”.
5. Check the Apache configuration file, “cat httpd.conf”, find out the information about MaxClients,
Port, User, Group, ServerAdmin, ServerName, DocumentRoot, DirecotryIndex, ScriptAlias.
6. Change the ServerName to www.pcx.telecommx.sbu.ac.uk.
7. Change to DocumentRoot directory, rename the “index.html” file, “mv index.html index.bak”,
write a your own “index.html” file which only display the hostname and IP address of the current PC.
8. From your partner’s PC, open a web browser to your web site
"http://www.pcx.telecommx.sbu..ac.uk".
9. To execute CGI programs, open the Apache configuration file, “pico /etc/httpd/conf/httpd.conf”,
within the section, add ExecCGI to the end of the line
“Option Indexes Includes FollowSymLinks”.
10.Create a HTML file containing following lines, and save it as “hello.html” in Apache DocumentRoot
directory.
School of EE&IE
Welcome to PCx, Telecommx, CGI Test!
11.Create a Perl CGI file containing following lines, and save it as “hello.pl” in Apache cgi-bin directory,
and change mode to 755.
#!/usr/bin/perl -w
print "Content-type: text/html\n\n";
print " ";
print " Hello ";
print " Hello $ENV{'REMOTE_HOST'}! ";
print " ";
exit;
Dr. Perry XIAO Copyright © 2005, LondonSouth Bank University 1

Faculty of ESBE
Telecommunications & Internet Engineering
12.From your partner’s PC, open a web browser to your web site
"http://www.pcx.telecommx.sbu..ac.uk/hello.html", click the “Hello!” button and test your CGI
program, and write down the CGI output.
13.To allow individual users to publish their own web site, logout of root, log in using your own
username, in your home folder, make a sub-directory called “public_html”, change mode to 755,
create a simple personal wet page containing only your name, course, and student number, save it as
“index.html” under the “public_html” folder, change mode to 755.
14.Logout and re-login as root, open the Apache configuration file, un-comment (i.e. delete the # sign in)
all the lines within the section. Restart the httpd
daemon program.
15.From your partner’s PC, open a web browser to your web site
"http://www.pcx.telecommx.sbu..ac.uk/~yourusername", does it work?
16.Check the permission of your home folder, change mode to 755, redo step 15.
17.Delete the “hello.html” and “hello.pl” files.
18.Restore the “index.html” file, “mv index.bak index.html”.
19.Restore the Apache configuration file, “mv /etc/httpd/conf/httpd.bak /etc/httpd/conf/ httpd.conf”.
20.If you still have time, go to the KDE graphical interface by typing “startx”, and find out if there are
any graphical equivalent programs for the above tasks.
Questions:
1. If each web service requires 1.2MB of RAM on the server, with the current setup of your PC,
how many users can access your web site simultaneously without significantly slowing down the
service?
2. What is Perl?
3. What is CGI programming?
4. By default, “public_html” is your personal web folder, can you rename it something else? How?
5. Can you run the “hello.pl” CGI program without going through “hello.html” file?
6. What is the transmission rates of your Ethernet card and RJ45 Ethernet cable?
Dr. Perry XIAO Copyright © 2005, LondonSouth Bank University 2