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Ubuntu Package Management

Ubuntu Basics

Checking Ubuntu Version


  • (Chroma recommends Ubuntu 11.04)
aracity@aracity-desktop:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 9.04
Release:        9.04
Codename:       jaunty

Ubuntu Lifecycle

Ubuntu releases die after 18 months, with backing repositories going offline, so apt-get update will stop working and will not be able to install updates.

Diagram of lifecycles.

Update sources.list (30 Aug 2013)

Edit “/etc/apt/sources.list” (with root permissions) substituting all the links: “” for “”

Reconnecting to a backing old-releases repository, in order for apt-get to work again.:

aracity@aracity-desktop:/etc/apt$ sudo cp sources.list sources.list.apr15-2010
aracity@aracity-desktop:/etc/apt$ sudo cp sources.list
aracity@aracity-desktop:/etc/apt$ sudo perl -pi -e 's,,,g'
aracity@aracity-desktop:/etc/apt$ sudo perl -pi -e 's,,,g'
aracity@aracity-desktop:/etc/apt$ diff sources.list
< deb jaunty main restricted
< deb-src jaunty main restricted
> deb jaunty main restricted
> deb-src jaunty main restricted
aracity@aracity-desktop:~$ sudo apt-get update
Fetched 10.7MB in 11s (928kB/s)
Reading package lists... Done