Synonyms for squashfs or Related words with squashfs
Examples of "squashfs"
is a compressed read-only file system for Linux.
compresses files, inodes and directories, and supports block sizes up to 1 MB for greater compression.
is also the name of free software, licensed under the GPL, for accessing
is also used by Linux Terminal Server Project and Splashtop. The tools "unsquashfs" and "mksquashfs" have been ported to Windows NT - Windows 8.1. 7-Zip also supports
It boots in about 5 seconds, thus is marketed as "instant-on." It uses Bootsplash,
, Blackbox, SCIM, and the Linux kernel 2.6.
is intended for general read-only file-system use and in constrained block-device memory systems (e.g. embedded systems) where low overhead is needed. The original version of
used gzip compression, although Linux kernel 2.6.34 added support for LZMA and LZO compression, Linux kernel 2.6.38 added support for LZMA2 compression (which is used by xz), and Linux kernel 3.19 added support for LZ4 compression.
The CE Linux Forum also has sponsorships to bring embedded projects to fruition. Thanks to grants from CELF, amongst others the LinuxTiny patches and the LogFS and
flash file systems have been pushed to mainline Linux.
The on-disk format of
has stabilized enough that it has been merged into the 2.6.29 version of the Linux kernel. In that process, the backward-compatibility code for older formats was removed.
UBI (Unsorted Block Images) is an "erase block" management layer for flash memory devices. UBI serves two purposes, tracking NAND flash "bad blocks" and providing wear leveling. Wear leveling spreads the erases and writes across the entire flash device. UBI presents logical "erase blocks" to higher layers and maps these to physical flash "erase blocks". UBI was written specifically for UBIFS so that it does not have to deal with wear leveling and "bad blocks". However, UBI may also be useful with
and NAND flash;
is not aware of NAND flash "bad blocks".
The A110 is a netbook computer by One. It is built on a reference design by Quanta Computer and was announced to run Linpus Linux. However, some or all of the first batch have actually been delivered with a modified Ubuntu Linux installed, using
to fit the system in the 2GB Flash memory.
DebWrt has a fully writable file system, which allows for package management via the dpkg package system, allowing users to install new software to meet their individual needs. This contrasts with Linux-based firmwares based on a read-only
filesystem (or similar) that offers efficient compression but no way to modify the installed software without rebuilding and flashing a complete firmware image.
Slax modules are compressed read-only
file system images that are compressed with a LZMA compressor. The various modules are stacked together to build the complete Slax root directory. A supplemental writable layer (a tmpfs file system) is put on the top of the stack to implement the write functionality.
Linux supports numerous file systems, but common choices for the system disk on a block device include the ext* family (ext2, ext3 and ext4), XFS, JFS, ReiserFS and btrfs. For raw flash without a flash translation layer (FTL) or Memory Technology Device (MTD), there are UBIFS, JFFS2 and YAFFS, among others.
is a common compressed read-only file system.
On a PC, a bootable Compact Disc generally conforms to the El Torito specification, introduced in 1994. Many Linux based live CDs use a compressed filesystem image, often with the cloop compressed loopback driver, or
compressed filesystem, generally doubling effective storage capacity, although slowing application start up.
On 12 August 2005 the first Live edition of series II was published. It had a more distinctive graphical design, used the
technology (2 GB of data packed on just one CD) and unionfs. It detected the hardware and configured the X Server automatically.
dyne:bolic can be extended by downloading extra modules such as development tools or common software like OpenOffice.org. These are
files placed in the modules/ directory of a "dock" (see below) or a burnt CD and are automatically integrated at boot.
For some applications, initramfs can use the "casper" utility to create a writable environment using unionfs to overlay a persistence layer over a read-only root filesystem image. For example, overlay data can be stored on a USB flash drive, while a compressed
read-only image stored on a live CD acts as a root filesystem.
The Sony VAIO versions such as 18.104.22.168 are installed as "VAIO Quick Web Access". The installer and the resulting
files occupy roughly 2×250 MB. The
files consist of a hidden splash.idx and two hidden folders splash.sys and splash.000 in the Windows C:-partition, where splash.000 corresponds to splash.sys\persist for a DOS file system emulation of an USB flash drive. The MD5 checksums of the various Bootsplash bs-"xxxx".sqx and "Virtual Appliance" va-"xxxx".sqx files (including a special Firefox configuration) are noted in splash.sys\version for a simple integrity check at the Splashtop start. VAIO laptops offer special buttons "ASSIST", "WEB", or "VAIO" depending on the model. The power button on these laptops triggers an ordinary PC boot process, the "WEB" button starts Splashtop. If a Windows-version configured for VAIO is already running the "WEB" button only starts the default browser.
The reference implementation in C by Yann Collet is licensed under a BSD license. There are ports and bindings in various languages like Java, C#, Python etc. Databases like Hadoop use this algorithm for fast compression. LZ4 was also implemented natively in the Linux kernel 3.11. The FreeBSD, Illumos, ZFS on Linux, and ZFS-OSX implementations of the ZFS filesystem support the LZ4 algorithm for on-the-fly compression. Linux supports LZ4 for
Overlayfs, Unionfs, and aufs are union filesystems, that allow multiple filesystems to be combined and presented to the user as a single tree. This allows the system designer to place parts of the operating system that are nominally read-only on different media to the normal read-write areas. OpenWrt is usually installed on raw flash chips without FTL. It uses overlayfs to combine a compressed read-only
Tin Hat is a Security-focused Linux distribution derived from Hardened Gentoo Linux. It aims to provide a very secure, stable, and fast desktop environment that lives purely in RAM. Tin Hat boots from CD, or optionally from USB flash drive, but it does not mount any file system directly from the boot device. Instead, Tin Hat employs a large
image from the boot device which expands into tmpfs upon booting. This makes for long boot times, but fast speeds during use.
is used by the Live CD versions of Arch Linux, Debian, Fedora, Gentoo Linux, Linux Mint, Salix, Ubuntu and on embedded distributions such as the OpenWrt and DD-WRT router firmware. It is also used in Chromecast and for the system partitions of Android Nougat. It is often combined with a union mount filesystem, such as UnionFS, OverlayFS, or aufs, to provide a read-write environment for live Linux distributions. This takes advantage of both the SquashFS's high speed compression abilities and the ability to alter the distribution while running it from a live CD. Distributions such as Debian Live, Mandriva One, Puppy Linux, Salix Live and Slax use this combination.
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