That's not the tip, however; this is. I may want to launch an application other than the ones found in the Utilities menu. Since Terminal is there, I tried to use Terminal to launch (using the open command) other applications. open, however, is not on the Install DVD, but it will still work if used from another partition. For example (assuming system is my regular boot volume):
/Volumes/system/usr/bin/open /Applications/TextEdit.app
But what if the regular boot partition is shot? The answer is to copy the open command from the regular boot partition to the installer partition:
cp /usr/bin/open /Volumes/installer/usr/bin/.
Now I can use the open command from Terminal when booted from the installer partition. When DiskWarrior comes out, and the other commercial disk repair tools, I will copy them into /Volumes/installer/Applications, and be able to launch them when booted from the installer partition. Note that this may work in Tiger, but I haven't tried.

