Installing and uninstalling QeD


Note: before running QeD you must install Java Runtime Environment - you can get it here. QeD requires minimum JRE 1.5.0 to run properly. For information on JRE installation and configuration read this.

Note: this document refers to installing QeD on Windows and Linux, as these are the only operating systems that I use. I didn't test it on any other types of operating systems, but I guess that getting QeD to run won't be a problem once you install JRE.



QeD is distributed in three different packages:

  Windows installer (exe file) - it's as basic as they come: read the license, choose a directory and that's pretty much it. You can run your program from the desktop/start menu shortcuts or from the directory you specified by executing qed.exe. The installer also contains a bundled JRE online installation (only 7MB), so you can install/update the JRE on your system.
  Linux installer (bin file)  - this one is also very straightforward: it will install QeD into qed20/ directory, create/repair the Java symlink and create a QeD symlink. So you can run QeD from anywhere by simply typing qed.
  Archive package (zip file) - available especially for everyone who won't be able to use the files above. You can of course use it on Windows and Linux as well. The main class that starts QeD is simply called Qed and is inside the qed.jar file. For information on running QeD read this.


When using the Windows installer you get three usual ways for removing an application - through 'Add/Remove Programs', through the start menu and directly from the application directory. The Uninstaller is really simple and will just ask you to confirm the removal - pressing 'Yes' will remove QeD from your system.

QeD doesn't store any information outside its folder, so when using the archive all you have to do to remove QeD is to delete its folder.

The Linux installer doesn't create an uninstall utility, but apart from deleting the program folder, the only thing that you might want to remove is the qed symbolic link. To do that just issue this command:

rm -f /bin/qed



Installing and configuring the JRE
You can install the Java Runtime Environment just like most of other applications. Under Windows you can use the regular installer, under Linux you get a binary file that you simply need to execute. For more information on installing JRE you can read this document at the SUN website. The most current version of the Java Runtime Environment is always available at the website.

Configuring the JRE in order to run applications basically boils down to making sure that you can just type java and the JRE application located in (for example) /usr/java/jdk1.5.0_02/bin/java will start.

Getting this to work in Linux is really easy. This method is not the only one and it may not be the best, but it's probably the fastest. All you have to do is create a symlink like the one below (just modify the path in bold to where you have JRE installed):

ln -s /usr/java/jdk1.5.0_03/bin/java /bin/java

In Windows everything should be properly configured right after you install the JRE. Unfortunately it sometimes happens that the JRE paths are "lost" and you can no longer start java without giving a full path to it. This can probably get corrected by opening the Registry (regedit) and setting the value of  HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\1.5\JavaHome to the path where your JRE is installed (1.5 stands for the JRE version so it might be different in your case).



If anything is still unclear please ask at the QeD forum.

Copyright © 2006 Twilight