Squashfs
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|magic=[https://github.com/file/file/blob/master/magic/Magdir/filesystems#L2194 68 73 71 73] (little-endian)<br />[https://github.com/file/file/blob/master/magic/Magdir/filesystems#L2191 73 71 73 68] (big-endian) | |magic=[https://github.com/file/file/blob/master/magic/Magdir/filesystems#L2194 68 73 71 73] (little-endian)<br />[https://github.com/file/file/blob/master/magic/Magdir/filesystems#L2191 73 71 73 68] (big-endian) | ||
| + | |developed by=Phillip Lougher<ref>[https://sourceforge.net/p/squashfs/mailman/message/67563/ (Squashfs-announce) Squashfs1.2 released - 2003-03-13 05:30:45 - SourceForge mailman]</ref> | ||
| + | |maintained by=Phillip Lougher | ||
|released=2002 | |released=2002 | ||
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Revision as of 16:18, 17 August 2025
Squashfs is a compressed read-only filesystem for Linux. Typically used as a "live image" for booting Linux off a removable storage (e.g. USB, CD/DVD), minus components like the bootloader, kernel and initramfs.[3] It is also used in modern AppImage,[4], or Snap[5] as a way portable software distribution on Linux. Squashfs can also be used to store other data, such as disk images.[6] Under Windows, Squashfs contents can be opened/extracted via 7-Zip.[7]
See also cramfs.
Contents |
Identification
SquashFS files created on little-endian machines begins with hexadecimal 68 73 71 73, which translates to "hsqs" in ASCII. SquashFS files created on big-endian machines with hexadecimal 73 71 73 68, which translates to "sqsh" in ASCII.
Examples
Create a Squashfs (file system) image from current/present directory and output it into its parent directory:
$ mksquashfs . ../example.squashfs -b 1048576 -comp xz -Xdict-size 100%
Open a Squashfs image (as root) from present directory and have its contents visible in /mnt:
# mount example.squashfs /mnt
Open a Squashfs image (as user) from present directory and have its contents visible in /mnt/temp:
$ squashfuse example.squashfs /mnt/temp
Software
- 7-Zip
- Squashfuse (Unix-like only)
Sample files
- dexvert samples — archive/squashFS
- Search results for .sfs extension and is squashFS format - Discmaster.textfiles.com
Links
References
- ↑ What are the commonly accepted file name extension for squashfs? #259 - GitHub
- ↑ (Squashfs-announce) Squashfs1.2 released - 2003-03-13 05:30:45 - SourceForge mailman
- ↑ EROFS For Live Media - Fedora Project
- ↑ History of AppImage - Wikipedia
- ↑ Snap - support section - Wikipedia
- ↑ Squashfs As a Forensic Container - foo.be
- ↑ python2.7 How to handle squashfs in Windows - StackOverflow
