Cronkit – make cron jobs human-readable

Cronkit is a command-line tool that makes cron jobs human-readable, auditable, and visual.

It converts confusing cron syntax into plain English, generates upcoming run schedules, provides ASCII timeline visualizations, and validates crontabs with severity levels and diagnostic codes.

This is free and open source software.

Features include:

• Explain – Convert cron expressions to plain English.
• Next – Show the next N scheduled run times.
• List – Parse and summarize crontab jobs from files or user crontabs.
• Timeline – Visualize job schedules with ASCII timelines showing density and overlaps.
• Check – Validate crontab syntax with severity levels and diagnostic codes, including advanced linting (frequency analysis, command hygiene, overlap detection).
• Doc – Generate comprehensive documentation (Markdown, HTML, JSON) from crontabs with optional sections.
• Stats – Calculate fleet statistics including run frequency metrics, collision analysis, and hour distribution.
• Diff – Compare crontabs semantically to see what actually changed (jobs added/removed/modified).
• Budget – Analyze concurrency budgets to prevent resource exhaustion from too many simultaneous jobs.
• JSON Output – Machine-readable output for all commands via --json flag.
• Read-Only – Safe by design; never executes or modifies crontabs.

Website: github.com/hzerrad/cronkit
Support:
Developer: Houssem Eddine Zerrad
License: Apache License 2.0

Cronkit is written in Go. Learn Go with our recommended free books and free tutorials.

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