I would like to know where to find the source code of Ubuntu 12.04. I'd like to see how far it is "open source".
Get the latest version of package
Get specific version:
Now you can for instance to:
to see the development history, or any similar SCM operation.
bzr is a good option as it maintains the actual input Ubuntu developers give to Ubuntu, so it is a more canonical (no pun intended) source.
Launchpad bzr browsing
You can also browse the repositories on the Launchpad.
Now choose the Ubuntu version that interests you, e.g.: https://code.launchpad.net/~ubuntu-branches/ubuntu/trusty/hello/trusty
Then if you click on "Browse the code" you will go to: https://bazaar.launchpad.net/~ubuntu-branches/ubuntu/trusty/hello/trusty/files where you can browse the files and commit history.
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Software in linux distributions is organized into packages. Each package either contains user facing software like Firefox, or libraries like libasound2 which is required by firefox. If you install Firefox, the
The vast majority of things in Ubuntu's repositories of packages are open source. But Ubuntu does have a list of approved proprietary software. While this software doesn't satisfy the freedom goals of Ubuntu, they are greatly desired by the community, and provide a lot of value. Examples of this are Skype or Sun Java (now removed). These packages are not listed on the Ubuntu packages site.
The source code for every package in the main and universe archives is in Launchpad, or you can get it by enabling
Source code for packages in the partner repositories is not generally available, as they are mostly not open source applications. This is true for some items available in the Software Center as well.