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Old 20th August 2010
ocicat ocicat is offline
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Default the history of /usr

A few months back, a question was asked on OpenBSD's official misc@ mailing list about the history of /usr. Was this originally a shortened form of "user", or what's this about "system resources"? Perhaps not a barn burner (translate: exciting ) of a subject, but some might like the perspective offered:

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Old 20th August 2010
BSDfan666 BSDfan666 is offline
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In the original Unix /usr housed homedirs for user accounts as well as other stuff of general interest to users.. this remains partially true today.

You can find a note from Dennis Ritchie's, as seen here.
In particular, in our own version of the system, there is a directory "/usr" which contains all user's directories, and which is stored on a relatively large, but slow moving head disk, while the othe files are on the fast but small fixed-head disk.
So system stuff was traditionally kept in /bin and possibly /sbin, while "shared" user stuff may have been in /usr/bin instead.

I have a few older commercial Unix flavours for x86, they also typically put user stuff in /usr.

Having pages like hier(7) are really helpful, all systems should document their preferred directory structure.
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Old 27th August 2010
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very interesting. thanks for the link.
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