cerrfix

Overview

cerrfix is a lightweight, extensible command-line tool designed to help users and system administrators diagnose and resolve common errors on Linux-based systems. It works by matching known error signatures from logs against a curated, human-readable knowledge base of fixes and presenting safe, actionable solutions.

The tool is intentionally non-intrusive and transparent, making it suitable for personal machines, servers, development environments, and shared systems.

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Motivation

Linux systems frequently encounter recurring problems such as:

• Compiler and linker errors
• Missing headers and shared libraries
• Runtime loader failures
• Permission and execution issues
• Environment and path misconfigurations

While solutions often exist, they are:

• Repeated across users and cattered across forums, emails, or chat logs
• Poorly documented or forgotten over time

cerrfix converts this operational knowledge into a structured, searchable, and reusable fix repository.

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Key Features

• Rule-based error detection using regex patterns
• YAML-based fix definitions
• Human-readable and auditable fixes
• Optional fix script generation
• CLI-first design (no background services)
• Works across diverse Linux environments
• Extensible fix repository without code changes

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Project Structure

cerrfix/
├── bin/
│   └── cerrfix                # CLI entrypoint
├── cli.py                     # Main logic
├── core.py                    # core functions
├── fixes/                     # Fix definitions (YAML)
├── schema/                    # schema definition 
│   └── fix_schema.py          # schema definition file
├── utils/                     # path and validation
│   └── paths.py               # path
│   └── validation.py          # validation
├── setup-env.sh               # PATH setup script
├── README.org
└── CONTRIBUTING.org

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Requirements

Runtime

• Linux
• Python >= 3.8

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Installation

Clone the Repository

git clone https://github.com/CISSSCO/cerrfix.git
cd cerrfix

Run Installer

./install.sh

Enable CLI Access

source setup-env.sh

After this, the cerrfix command will be available in your shell.

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Usage

Diagnose an Error Log

cerrfix diagnose error.log

Add a New Fix

cerrfix add path/to/fix.yaml

Update an Existing Fix

cerrfix update path/to/fix.yaml

Remove a Fix

cerrfix remove issue_id

List Available Fixes

cerrfix list

Show Fix Details (Raw yaml)

cerrfix show issue_id

Search Fixes

cerrfix search linker

Show statistics

cerrfix stats

Example Output

✅ Issue Detected!
Issue ID    : SHARED_LIB_NOT_FOUND_001
Description : Shared library not found at runtime
Category    : system
Severity    : error

🔧 Suggested Fix:
  $ export LD_LIBRARY_PATH=/path/to/lib:$LD_LIBRARY_PATH

🛠 Fix script generated:
  source fix_SHARED_LIB_NOT_FOUND_001.sh

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Design Philosophy

• Safety first: No automatic destructive actions
• Transparency: All fixes are human-readable
• Extensibility: Add fixes without touching code
• Portability: Avoid site-specific assumptions

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Disclaimer

cerrfix provides suggested fixes based on known patterns. Always review generated scripts before executing them.

The authors are not responsible for unintended system changes.

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Maintainer

• Name: Cisco Ramon
• Role: Creator & Maintainer
• Focus: Linux systems, tooling, and developer productivity