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I want to do research on the evolution of Linux.

Therefore it would be nice if I could download the sources of Linux at several moments in time (from 1991 till now).

Is there a site where one can find those sources?

Similar sites for other Unix based operating systems are also welcome.

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Linux (the kernel), or GNU/Linux (the usable operating system)? The answers so far seem to talk mostly about the kernel. – Michael Kjörling Apr 30 '12 at 9:26
up vote 10 down vote accepted

I suggest these two:


and a more straightforward one from this site that contain Linux kernel 0.01, 0.10, 0.11,...,0.98:


and the other:


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@utopiabound thanks – XinHua Apr 30 '12 at 14:43

Check this URL: http://www.kernel.org/pub/linux/kernel/

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Archive.org hosts a Git repo with the complete history of Linux, made by grafting 3 repositories together. You'd probably need to do a git pull to update it with the most recent changes.

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The Unix Heritage Society has a load of old Genuine Unix source code. The source code page has Bell Labs Unix from Version 1 through 6, 32V, System III, some or all of the BSDs, pointers to Linux progenitor Minix.

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