This file contains comments on problems discovered while trying to port  some
software to knoppix linux.  If you have any insights into any of the problems
described here, send a message to jc@trillian.mit.edu and enlighten me.

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vi[m] breaks multi-linked files.

The general solution is to edit /etc/vim/vimrc and look for the line:
  set backupcopy=no
Change this to
  set backupcopy=yes
This doesn't make a lot of sense, but if you don't do this, vim  will  unlink
the  file  before  writing, thus breaking links, and files shared by multiple
directories will end up a real mess.

There were comments online that you should comment out the line
   set nobackup
I tried this, but it had no effect, and (hard) links were still broken when I
did a :w command.

If you can't edit /etc/vim/vimrc, you can put the set command in your ~/.exrc
or  ~/.vimrc file.  This isn't as general, and you have to make sure that the
rc file is always used, but it also works.

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/etc/rc.d has disappeared

There are /etc/rc0.d, /etc/rc1.d, ... directories, and /etc/init.d that acts
like /etc/rc.d/init.d on other linux systems.  

It's not obvious yet where you should put your rc.local file.

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