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usr |
4 definitions found From The Free On-line Dictionary of Computing (13 Mar 01) [foldoc]: USR {U.S. Robotics, Inc.} From The Free On-line Dictionary of Computing (13 Mar 01) [foldoc]: usr User. The "/usr" directory hierarchy on {Unix} systems. Once upon a time, in the early days of Unix, this area actually held users' home directories and files. Since these tend to expand much faster than system files, /usr would be mounted on the biggest disk on the system. The root directory, "/" in contrast, contains only what is needed to {boot} the {kernel}, after which /usr and other disks could be mounted as part of the multi-user start-up process. /usr has been used as the "everything else" area, with many system" files such as compiler libraries (/usr/include, /usr/lib), utilty programs (/usr/bin, /usr/ucb), games (/usr/games), local additions (/usr/local), manuals (/usr/man), temporary files and queues for various {daemon}s (/usr/spool). These optional extras have grown in size as Unix has evolved and disks have dropped in price. Under later versions of {SunOS}, the user files have fled /usr altogether for a new "/home" {partition} and temporary files have moved to "/var". This allows /usr to be mounted read-only with some gain in security and performance since access times are not updated for files on read-only file systems. From V.E.R.A. -- Virtual Entity of Relevant Acronyms 13 March 2001 [vera]: USR U.S. Robotics (manufacturer) From V.E.R.A. -- Virtual Entity of Relevant Acronyms 13 March 2001 [vera]: USR User Service Routines
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