1/24/06 Notes

Summary for HCI 201 -- 1/24/06

Why are file and folder permissions important for websites?
Ans: You want the owner of files and folders to have read and write permission to that she can view the files and change or delete them. The owner of folders also wants to be able to view the contents of those folders in the browser or SSH; execute permission is required for this.
You want group and other (everyone besides the owner) to be able to read files and folders. You also want them to have execute permission for folders for the same reason as above. You do not want group and other to have write permission because they might be able to alter or delete the files in your website.
What are the recommended permissions for files and folders?
Read and write for owner files; read, write and execute for owner folders. Read for group and other files; read and execute for group and other files.
How do you set the background color for a webpage in FrontPage?
Ans: In the Normal View, right click on the page, select Page Properties >> Formatting Tab >> Background Colors Dropdown Box >> More Colors >> Select Color.
How do you delete a folder in SSH?
Ans: First delete all the contents of the folder, then delete the folder.
How do you add a link to an external site to a webpage?
Ans: Right click on the link and select Hyperlink Properties. Select Target Frame and New Window.

All files on the students.depaul.edu server visible over the World Wide Web must be in the public_html folder.
Suppose that folder b is contained in folder a.
Use the symbol .. for the parent folder of the current folder.
Look at this diagram of an example file system.

Create a FrontPage empty website named example-file-system.
Click on the example file system link.
Right click on each of the files ch1.htm, ch2.htm, ch3.htm. Select Save Target As and save each file to the example-file-system website.
In the FrontPage website example-file-system, create the new folder nameed.
Download each of the files app1.htm, app2.htm, app3.htm in the folder appendix from the HCI201 course website into FrontPage website.
In FrontPage, select View >> Refresh to verify that all of the files have been successfully downloaded.
Open a browser to text the website example-file-system.

Recall that an absolute address begins with http://. It is used for external web sites.
A relative address does not contain http://. It gives the location relative to the current page. There are three cases:
1. A page in the same folder as the current page:
  <a href="page2.htm">
2. A page in a subfolder of the current page:
  <a href="cities/page2.htm">
3. A page in a parent folder:
  <a href="../page2.htm">
A bookmark is used in a hyperlink to jump to a specific position within the target page.
To create a bookmark (also called an anchor) using FrontPage, position the cursor at the location of the new bookmark. Then select Insert >> Bookmark.
Here is the HTML code to indicate a bookmark:
<a name="section1">
To jump to the section1 bookmark within page1.htm, use an address link like this:
<a href="page1.htm#section1">
To force a hyperlink to display a page in a new browser window, right click on the hyperlink and click the button Target Frame in the Insert Hyperlink Dialog. Then select New Window.
The HTTP address tag that forces the page to be displayed in a new browser window is
<a target="_blank" href="page1.htm#section1">

Verify in the FrontPage example-file-system website the HTML code for hyperlinks and bookmarks.
Create sections D, E and F in ch3.htm similar to sections A, B and C in ch2.htm. Add bookmarks for these sections and hyperlinks to them in ch1.htm.
Create a link to an external website that opens in a new browser window.
Fix your uploaded Ex5 contents.htm page so that the Ex3 link refers to the actual Ex3 submission, not to the Ex3 stub page: