533 First Day Exercise

One

• logon to a unix computer and go to the shell
  
  dante28%
• call the pico editor
  
  dante28% pico
• type in the following two lines:
  
  #! /usr/local/bin/perl5
  print ("Hi Terry\n");
• save your work under the file name "one"

• at the prompt, call your file with the perl compiler:
  
  perl one

Does your perl program run?

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Two

• call the file "one" with the pico editor
• change it to read:
  
  #! /usr/local/bin/perl5
  use CGI qw(:standard);
  
  print header, start_html;
  
  for ($i = 1; $i <= 3; $i++) {
  
  print ("Hi Terry\n");
  
  }
  print end_html;
• when you exit pico, save this file to "one.cgi"
• test your file by issuing the command:
  
  dante%28perl one.cgi ""

is the response formatted like html?

• change the file permissions with the unix chmod command:
  
  dante%28 chmod 755 one.cgi
• find out where one.cgi is located by using the unix command pwd:
  
  dante%28 pwd
• point your favorite browser at the url

Did your file come up in the browser?

Extra points bonus question: How would you format the output with "&ltbr>"?

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Three

• open Wordpad
• type in the following lines:
  
  &lthtml>
  
  &ltbody>
  
  Here is the date:&ltbr>
  
  &ltscript language = "javascript">
  
  today = new Date();
  
  document.write(today.toLocaleString());
  
  </script>
  
  </body>
  
  </html>
• save the file as "java.htm" with the "text" type in a special subdirectory
• point your browser at java.htm

did you see a date?

---

Four

• open the DOS prompt and find your way to the special subdirectory where java.htm is located
• use "edit" and type in the following file:
  
  import java.awt.*;
  
  import java.applet.*;
  
  public class hello extends Applet {
  
  public void init() {}
  
  public void paint (Graphics g) {
  
  g.drawString("Bingo Bobbins", 20, 20);
  
  }
  
  }
• save the file as "hello.java"
• call the java compiler "javac" with the command:
  
  javac hello.java
• display your directory to see if you have a file called "hello.class"
• use "edit" again to modify the file "java.htm" to look like:
  
  &lthtml>
  
  &lthead>
  
  &ltbody>
  
  Here is the date:&ltbr>
  
  &ltscript language = "javascript">
  
  today = new Date();
  
  document.write(today.toLocaleString());
  
  </script>
  
  &ltbr>
  
  &ltapplet code="hello.class"
  
  height = 150
  
  width = 150>
  
  </applet>
  
  </body>
  
  </html>
• at the DOS prompt, check the applet by using "appletviewer":
  
  c:\mysubdirectory\ appletviewer java.htm

Did you see your applet?

• finally, point your browser at java.htm