In DOS, you have probably used the EDIT.COM program to edit text files. On the Dachstein firewall, the equivalent is called e3. e3 works similar to EDIT. You can simply type e3 then [Enter] to load the application. Then, you will be required to explicitly open the file you want to edit. If you are in the same directory as the file you need to edit, you can type:
e3 <filename> [Enter]
There are a few basic commands you need to get around in e3. These are:
Help-displays a screen with basic commands.
Quit-Exits e3. If changes have been made to your file, you will be prompted to save the changes. Select [y]es or [n]o.
Save-saves the changes without exiting.
Find-locate a string of text in the file (and go there).
Go again-repeat the last find or replace
There are other very useful commands in e3 - see the Help screen for details.