/sys??”A /proc-like file system, new in the Linux 2.6 kernel and intended to contain
files for getting hardware status and reflecting the system??™s device tree as it is seen by the
kernel. It pulls many of its functions from /proc.
/tmp??”Contains temporary files used by applications.
/usr??”Contains user documentation, games, graphical files (X11), libraries (lib), and a
variety of other user and administrative commands and files.
/var??”Contains directories of data used by various applications. In particular, this is
where you would place files that you share as an FTP server (/var/ftp) or a Web
server (/var/www). It also contains all system log files (/var/log) and spool files in
/var/spool (such as mail, cups, and news).
The file systems in the DOS or Microsoft Windows operating systems differ from Linux??™s file structure,
as the sidebar ???Linux File Systems Versus Windows-Based File Systems??? explains.
Linux File Systems Versus Windows-Based File Systems
Although similar in many ways, the Linux file system has some striking differences from file systems
used in MS-DOS and Windows operating systems. Here are a few:
In MS-DOS and Windows file systems, drive letters represent different storage devices (for
example, A: is a floppy drive and C: is a hard disk).
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