[NTLUG:Discuss] Debian

[Terry]

While experimenting with Ubuntu just now, I ran Ubuntu's live cd on an
old PC and in the process, I found some files on an old drive in that
PC that I wanted to retrieve and thought I'd do it via scp, BUT, alas,
I found that Ubuntu's live CD did NOT have sshd installed.
[openssh-client is installed but not openssh-server] BUT, I was able
to use apt-get to install openssh-server, [even though it's just a
live CD!].
My question is:   
Is this particular to Debian and / or Ubuntu? 
In other words: 
Have I just discovered one of the cool treasures of Debian / Ubuntu? 
or Did I just experience yet another Linux epiphany?
In other words:  
Is this new found capability just yet another of the added advantages
of using apt-get?  And, it would follow, that if any live CD from any
other distro included apt-get installed and configured properly, one
could do the same thing?
How about another package manager? Would another package manager be
able to install applications to a live CD [with one single command]?
or....?
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