squashfs ☆
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Description:
Compressed read-only file system for Linux
Type: Formula  |  Latest Version: 4.7.4@0  |  Tracked Since: Nov 5, 2025
Links: Homepage  |  formulae.brew.sh
Category: System utilities
Tags: filesystem compression linux archive embedded
Install: brew install squashfs
About:
Squashfs is a highly compressed read-only file system for Linux. It uses gzip, lzma, lzo, or xz compression to achieve up to 2x better compression than traditional gzip, making it ideal for space-constrained embedded systems and live Linux distributions.
Key Features:
  • High compression ratios with multiple algorithms (gzip, lzma, lzo, xz, zstd)
  • Block-based compression for efficient random access
  • Support for large filesystems (up to 2^64 bytes)
  • Optional XATTR support for extended attributes
  • Fragmentation and duplicate file elimination
Use Cases:
  • Live Linux distributions and installation media
  • Embedded systems and IoT devices with limited storage
  • Software package distribution and archival
  • Container image layers
Alternatives:
  • tar – Uncompressed archive format, larger files but simpler extraction
  • mkisofs – Creates ISO images without compression, better for optical media
  • erofs – Newer Linux read-only filesystem with better compression but less widespread support
Version History
Detected Version Rev Change Commit
Nov 5, 2025 11:21pm 0 VERSION_BUMP 9fa31772
Sep 14, 2025 6:37am 0 VERSION_BUMP 6c917dad
Sep 17, 2023 4:33pm 0 VERSION_BUMP d991f88a
Mar 19, 2023 3:07pm 0 VERSION_BUMP e0592a35
Mar 19, 2023 3:07pm 0 VERSION_BUMP 1e945a9a
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