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Modern Linux distributions include a /sys directory as a virtual filesystem (sysfs, comparable to /proc, which is a procfs), which stores and allows modification of the devices connected to the system, [20] whereas many traditional Unix-like operating systems use /sys as a symbolic link to the kernel source tree.
A place for files that might change frequently - especially in size, for example e-mail sent to users on the system, or process-ID lock files. /var/log: Contains system log files. /var/mail: The place where all incoming mail is stored. Users (other than root) can access their own mail only. Often, this directory is a symbolic link to /var/spool ...
The Unix file system (UFS) is a family of file systems supported by many Unix and Unix-like operating systems. It is a distant descendant of the original filesystem used by Version 7 Unix . Design
ext4 (fourth extended filesystem) is a journaling file system for Linux, developed as the successor to ext3.. ext4 was initially a series of backward-compatible extensions to ext3, many of them originally developed by Cluster File Systems for the Lustre file system between 2003 and 2006, meant to extend storage limits and add other performance improvements. [4]
ext3, or third extended filesystem, is a journaled file system that is commonly used with the Linux kernel.It used to be the default file system for many popular Linux distributions but generally has been supplanted by its successor version ext4. [3]
ext – Extended file system, designed for Linux systems. ext2 – Second extended file system, designed for Linux systems. ext3 – A journaled form of ext2. ext4 – A follow-up for ext3 and also a journaled filesystem with support for extents. ext3cow – A versioning file system form of ext3.
Write Anywhere File Layout (WAFL) by NetApp is a file layout that supports large, high-performance RAID arrays, quick restarts without lengthy consistency checks in the event of a crash or power failure, and growing the filesystems size quickly. Built using log-structured file system concept, [citation needed] snapshots and off-line data ...
File system Creator Year of introduction Original operating system; DECtape: DEC: 1964 PDP-6 Monitor OS/3x0 FS: IBM: 1964 OS/360: Level-D DEC: 1968 TOPS-10: George 3 ICT (later ICL) 1968 George 3: Version 6 Unix file system (V6FS) Bell Labs: 1972 Version 6 Unix: RT-11 file system DEC: 1973 RT-11: Disk Operating System GEC: 1973 Core Operating ...