Then, by chance, I found the right way to install the DOM Inspector XPI separately for Linux in those distros, where a package might be missing (such as a relevant .deb package in Knoppix 4.0.2, because it's a snapshot from Debian's testing branch of the time) or not included at all... — By downloading a specific DOM Inspector XPI from the old mozilla.org FTP site, which is archived at mozilla.org's own ftp site:
Caveat in Knoppix and other Live CD-s: You can only install it as superuser, it won't install into the user directory and thus it won't save, but rest assured, you can install it again every time you need it, although it may be tedious for daily use, if that might be the case for some users.
Here's what you have to follow, if you're stuck using a LiveCD, a version of Firefox without DOM Inspector built-in, no package repository to rely on and no package to be found for your particular distro (Knoppix):
- Find out what your version of Firefox is in your Live CD (launch Firefox; Help>About). For some Knoppix Live CD's I sometimes use, mine is 1.0.6 for Knoppix 4.0.2 and something else in newer versions of Knoppix. Keep in mind that newer versions of Knoppix include Debian IceWeasel (Knoppix is based on Debian), which is a source-compatible rebranded copy of Firefox.
- Exit Firefox, relaunch it as superuser, best with
- Go to
- From there, choose the version of Firefox/IceWeasel/GNU IceCat you are stuck using (if using a browser click the relevant version folder link);
- Once there, browse to a folder called
linux-i686and there browse to the
xpifolder. Note down the address in a separate editor.
- (Make sure that ftp.mozilla.org is the allowed domain to install XPI's)
- Click on
adt.xpi(the XPI for DOM Inspector), which should be at the very top of the directory listing, go through the extension installation procedure. If after installation you don't see the extension listed, don't worry. Restart Firefox again as superuser, via sudo (you should now know how to use it). Verify that DOM Inspector is installed by checking the Tools menu. Exit the sudo'd Firefox.
- Start user-mode Firefox and you should see the DOM Inspector appear there.
- To maintain that you still have the XPI for future use, save it to local storage (a memory stick, for example) by downloading it in a normal-user firefox session from the same FTP address.
Settings for DOM Inspector can be changed through
about:config, then search using the