flash ☆

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Description:
Command-line script to flash SD card images of any kind

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: System utilities

Tags: sd-card raspberry-pi cli flash embedded

Install: brew install flash

About:
Flash is a streamlined command-line utility designed to write OS images to SD cards with minimal configuration. It automatically handles device detection, unmounting, and verification steps to ensure a reliable flashing process. This tool significantly simplifies preparing bootable media for embedded systems like Raspberry Pi.

Key Features:

Automatic SD card detection and selection
Safe unmounting of volumes before writing
Supports raw image and compressed formats
Provides progress feedback during flashing

Use Cases:

Provisioning Raspberry Pi OS images
Creating bootable media for IoT devices
Mass flashing SD cards for hardware clusters

Alternatives:

dd – Standard Unix utility; more manual and prone to error without careful syntax
Etcher – GUI-based tool; better for desktop users but lacks CLI automation capabilities

Version History

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