lrzsz ☆

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Description:
Tools for zmodem/xmodem/ymodem file transfer

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: System utilities

Tags: file-transfer serial zmodem xmodem modem legacy

Install: brew install lrzsz

About:
Lrzsz provides a suite of tools implementing the ZMODEM, XMODEM, and YMODEM file transfer protocols. These utilities enable reliable data transmission over serial connections, which is essential for embedded systems development and legacy hardware communication. The package is particularly valued for its robust support of ZMODEM's crash recovery and efficient binary transfer capabilities.

Key Features:

Support for ZMODEM, XMODEM, and YMODEM protocols
Crash recovery and automatic resumption (ZMODEM)
Efficient binary file transfer
Command-line interface for scripting and automation

Use Cases:

Transferring firmware or configuration files to embedded devices and routers
Communicating with legacy hardware or serial consoles that lack modern network connectivity
Automated file exchange in environments constrained to serial links

Alternatives:

minicom – Provides a full terminal emulation interface with built-in file transfer capabilities, whereas lrzsz offers standalone command-line utilities.
sz/rz (from other implementations) – Lrzsz is the open-source implementation often preferred for its stability and compatibility across Linux and Unix-like systems.

Version History

Detected	Version	Rev	Change	Commit
Sep 11, 2025 6:55am		1	VERSION_BUMP	242bcfa8