Ubuntu server-sysadmin package-managment docs: best to read Debian's docs? Any Ubuntu-specific?

Question

1. Where's the authoritative, canonical (no pun intended) Ubuntu software-package-management ("pkg-man" for short) docs, references?
2. Similarly, where would one point a newbie sysadmin to canonical Ubuntu pkg-man docs? Mostly interested in server-sysadmin, cmdline-oriented usage (eg: apt-get over Synaptic).

Details, background, related questions

Noticed these Debian pkg-man docs, references:

• http://wiki.debian.org/PackageManagement
• http://www.debian.org/doc/manuals/debian-reference/ch02.en.html

Questions:

• Are the above authoritative and canonical (no pun intended) for Debian?
• Do these docs completely apply to Ubuntu?
• Do any related, Ubuntu-specific docs exist? Possibly presenting diffs between Debian, Ubuntu pkg-man systems, if any?

Answer 1

On help.ubuntu.com.

Specifically, here's a link to the article on package-management for 12.04.

Are the above authoritative and canonical (no pun intended) for Debian?

The debian-reference book is. The wiki probably has some good links.

I'd also recommend the recently released Debian Administrator's Handbook (which isn't Debian documentation but was written by a Debian Developer and is fairly broad).

Do these docs completely apply to Ubuntu?

Almost completely. The major differences are that Ubuntu has:

• the main/universe split,
• a different release processes,
• more stable releases available at any given time, and
• update-manager for upgrading between releases, where Debian has long release notes, explaining how to do it by hand.

Do any related, Ubuntu-specific docs exist?

See help.ubuntu.com.

Possibly presenting diffs between Debian, Ubuntu package management systems, if any?

Not that I know of. But the differences are so small...