Linux下 目錄/usr縮寫 及 目錄結構說明
阿新 • • 發佈：2019-02-12
/usr usually contains by far the largest share of data on a system. Hence, this is one of the most important directories in the system as it
contains all the user binaries, their documentation, libraries, header files, etc…. X and its supporting libraries can be found here. User programs like telnet, ftp, etc…. are also placed here. In the original Unix implementations, /usr was where the home
directories of the users were placed (that is to say, /usr/someone was then the directory now known as /home/someone). In current Unices, /usr is where user-land programs and data (as opposed to ’system land’ programs and data) are. The name hasn’t changed,
but it’s meaning has narrowed and lengthened from “everything user related” to “user usable programs and data”. As such, some people may now refer to this directory as meaning ‘User System Resources’ and not ‘user’ as was originally intended.（via 1,2）