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Squashfs was initially maintained as an out-of-tree Linux patch. The initial version 1.0 was released on 23 October 2002. [7] In 2009 Squashfs was merged into Linux mainline as part of Linux 2.6.29. [8] [9] In that process, the backward-compatibility code for older formats was removed.
Using a copy-on-write technique known as a log-structured file system, NILFS records all data in a continuous log-like format that is only appended to, never overwritten, an approach that is designed to reduce seek times, as well as minimize the kind of data loss that occurs after a crash with conventional file systems.
Creation of read-only snapshots of logical volumes (LVM1), leveraging a copy on write (CoW) feature, [6] or read/write snapshots (LVM2) VGs can be split or merged in situ as long as no LVs span the split. This can be useful when migrating whole LVs to or from offline storage. LVM objects can be tagged for administrative convenience. [7]
Shows disk free space on file systems dir: Is exactly like "ls -C -b". (Files are by default listed in columns and sorted vertically.) dircolors: Set up color for ls: install: Copies files and set attributes ln: Creates a link to a file ls: Lists the files in a directory mkdir: Creates a directory mkfifo: Makes named pipes (FIFOs) mknod
Copy-on-write can be implemented efficiently using the page table by marking certain pages of memory as read-only and keeping a count of the number of references to the page. When data is written to these pages, the operating-system kernel intercepts the write attempt and allocates a new physical page, initialized with the copy-on-write data ...
GNOME Disks is a graphical front-end for udisks. [3] It can be used for partition management, S.M.A.R.T. monitoring, benchmarking, and software RAID (until v. 3.12). [4] An introduction is included in the GNOME Documentation Project.
All of the Linux filesystem drivers support all three FAT types, namely FAT12, FAT16 and FAT32.Where they differ is in the provision of support for long filenames, beyond the 8.3 filename structure of the original FAT filesystem format, and in the provision of Unix file semantics that do not exist as standard in the FAT filesystem format such as file permissions. [1]
A full file reference (pathname in today's parlance) consists of a filename, a filetype, and a disk letter called a filemode (e.g. A or B). Minidisks can correspond to physical disk drives, but more typically refer to logical drives, which are mapped automatically onto shared devices by the operating system as sets of virtual cylinders.