grc ☆

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Description:
Colorize logfiles and command output

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: System utilities

Tags: colorizer logging terminal sysadmin cli

Install: brew install grc

About:
Grc (Generic Colouriser) is a versatile tool that colorizes logfiles and command output based on predefined or custom regex rules. It enhances readability by highlighting specific patterns, errors, and keywords in terminal output. This makes parsing complex logs or monitoring system processes significantly faster and more intuitive.

Key Features:

Colorizes output based on regex definitions
Includes filters for common commands (ls, netstat, ping, etc.)
Easy to extend with custom configuration files
Supports both local files and live command piping

Use Cases:

Monitoring and analyzing system logs in real-time
Improving readability of command-line tool output
Parsing application logs for quick error detection

Alternatives:

ccze – Another log colorizer, often pre-installed on some distros but less flexible in configuration than Grc.
grep --color – Built-in shell utility for highlighting matches, but lacks the multi-pattern formatting capabilities of Grc.

Version History

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