Computer exercises: general instructions


The computer exercises will take place in building 208, room 51. Typically, they will be incorporated in the lectures. The purpose is for the students to experience the practical aspects of the subject immediately after the theory of it has been presented by the lecturer.

22 Sun thin clients of the type used in the DTU databars have been installed in the room. In addition, 32 portable PC:s will be lent to the students for the duration of the lectures/exercises (Tuesdays, 1-5pm). The students will be expected to deposit an identification document e.g. a student card upon receiveing a computer.

The students using the thin clients should form groups of three; the portable PC:s, with slightly smaller screens, should be used by groups of two.

The exercise instructions ('cookbooks') can be viewed on the WWW by clicking on the exercise of the day on programme page

Therefore, the first action of the exercise is starting a browser.

Starting a browser

  • From a portable PC
    • Start the computer; you will be logged in automatically, as 'Student', no password is required;
    • Start Internet Explorer by clicking on the 'IE' icon on your desktop.
    • NOTE: the PC enters the power saving mode after a period of inactivity; you reactivate by pressing the <Fn> key in the lower left corner of the keyboard; when the login screen appears hit <enter> to unlock.
  • From a thin client
    • Login using your CampusNet account ( it must be operational);
    • Start a browser by clicking with the middle mouse button anywhere on the screen and highlighting 'Internet' - there is a choice of browsers.
The exercises will involve either accessing relevant services via WWW or running bioinformatics softwares on a DTU UNIX server. In the former case one more browser window should be opened. While the exercise cookbook remains displayed in the first window the actual actions will be performed in the other.

In the latter case you will need a UNIX shell.

Getting a UNIX shell

  • From a portable PC
    • Start the ICA client by clicking on the 'Citrix Program Neighbourhood' icon on your desktop; choose 'gbar-bohr' in the window that appears. Once the login window is displayed login using your CampusNet account (it must be operational);
      NOTE: the middle button needed by X/UNIX is emulated by pressing the left and right buttons at the same time.
    • Start a terminal by activating the third pull-up menu from the right ('Hosts') and selecting 'Console'. Once you get a terminal follow the exercise cookbook.
  • From a thin client
    • Start a terminal by activating the third pull-up menu from the right ('Hosts') and selecting 'Console'. Once you get a terminal follow the exercise cookbook. Again, the exercise cookbook should remain displayed in a browser window while the actions are performed in the shell.