Sketches moved from Windows to Ubuntu not recognized.

I am finally transitioning from Windows to Ubuntu. I foolishly thought I could just copy over all my sketches to the Ubuntu IDE folder in Ubuntu. However none of the copied files show up in the sketchbook. Since there is no folder named sketchbook I am at a loss how to make the IDE recognize the files, other than opening each one in a new sketch and saving it. There must be a better way!
The only thing I can think of, and I have no solution, is that in windows my IDE was in a folder with a different name than the one on Ubuntu. Does the IDE hard code path information and if so where is it and how can I change it?
I am going from Windows 2K to Ubuntu 12.04. The USB port in Windows stopped working for Serial.print() and rather than spend time trying to fix it again I am making the transition to Ubuntu.
Any help would be greatly appreciated.

Create a project with an unique name, save it, and search for that name.

Create a project with an unique name, save it, and search for that name.

In my original post I was trying to avoid cut & paste solution:

I am at a loss how to make the IDE recognize the files, other than opening each one in a new sketch and saving it. There must be a better way!

The sketch files are in the folder but the IDE does not recognize them. Why? It seems there must be a better way to get the IDE to recognize the sketches than by cut & paste.

Are you sure that you are looking at the right folder.
If you create a file/project with an unique name, do you actually see that new folder with the new file ?
Are the old files called *.ino ?
Did you accidently change the permission of the files and folders ?

I can copy old project folders or projects from the internet, and they are always recognized.

Check File/Preferences if there is correct way to scetchbook folder

SOLVED:
The problem is the way the IDE treats the sketchbook in Windows as opposed to Ubuntu.

In Windows I could add a sketch (folder containing .ino file) into my IDE folder and the sketch would show up in the Sketchbook.

In Ubuntu the IDE created a separate folder (not under the folder containing the IDE stuff) in the home directory. The IDE looked for sketches not in the sub folder of the IDE but in the separate folder it created. When I moved all the sketches to that folder they became available to the IDE.

Now all I have to do is make the IDE stop showing the "File Edit Sketch Tools Help" menu using black text on a black background.