clog
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Description:
Colorized pattern-matching log tail utility
Type: Formula  |  Latest Version: 1.3.0@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: Developer tools
Tags: logs colorization cli utility developer-tools
Install: brew install clog
About:
clog is a command-line utility that parses log files and applies colorization based on user-defined regular expressions. It enhances log readability by highlighting specific patterns, error levels, or keywords in real-time. This tool helps developers and sysadmins quickly identify critical information in verbose log streams without altering the original log files.
Key Features:
  • Real-time pattern matching and colorization
  • Customizable via .clogrc configuration files
  • Supports standard input and file tailing
  • Lightweight and fast performance
Use Cases:
  • Monitoring application logs in development environments
  • Debugging server errors by highlighting stack traces
  • Parsing build logs to spot warnings and failures
Alternatives:
  • grep --color – Built-in but lacks persistent configuration and complex multi-pattern styling
  • ccze – General-purpose log colorizer with predefined formats, less focused on custom regex
License: MIT
Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, arm64_ventura, arm64_monterey, arm64_big_sur, sonoma, ventura, monterey, big_sur, catalina, arm64_linux, x86_64_linux
Important Notes:
Next step is to create a .clogrc file in your home directory. See 'man clog'
for details and a sample file.
Version History
Detected Version Rev Change Commit
Sep 13, 2025 7:53am 0 VERSION_BUMP 6a6c511a
Dec 21, 2024 1:00am 0 VERSION_BUMP 3a02c8d9