Linked by Thom Holwerda on Mon 30th Jan 2012 20:39 UTC
General Unix Finally something really interesting to talk about. If you've used UNIX or any of its derivatives, you've probably wondered why there's /bin, /sbin, /usr/bin, /usr/sbin in the file system. You may even have a rationalisation for the existence of each and every one of these directories. The thing is, though - all these rationalisations were thought up after these directories were created. As it turns out, the real reasoning is pretty damn straightforward.
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Maybe the filesystem isn't used the way it was decades ago, but there are certain use-cases where the original multi-disk split still does make sense.

Btw: your example of kill/killall is particularly badly chosen. "kill" does the same thing on every *nix, but "killall" has wildly different meanings. Try "man killall" on Solaris and see for yourself that it's not always a synonym for "kill `pgrep `".

Hence the development of pkill/pgrep. ;) Much nicer to use than kill/killall.

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