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Cronhelp

Cron expression helper and scheduler tool. Translate cron expressions to human-readable text, generate cron expressions from natural language descriptions, v...

personAuthor: bytesagainhubclawhub
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CronHelp

A comprehensive sysops toolkit for scanning, monitoring, reporting, and maintaining system operations. CronHelp provides 18+ commands for tracking system events, performing health checks, managing backups, benchmarking, and exporting operational data in multiple formats.

Commands

| Command | Description | |---------|-------------| | cronhelp scan <input> | Record a scan entry — run without args to view recent scan entries | | cronhelp monitor <input> | Record a monitoring observation — run without args to view recent entries | | cronhelp report <input> | Log a report entry — run without args to view recent reports | | cronhelp alert <input> | Record an alert — run without args to view recent alerts | | cronhelp top <input> | Log a top-level event — run without args to view recent entries | | cronhelp usage <input> | Track usage data — run without args to view recent usage entries | | cronhelp check <input> | Record a check result — run without args to view recent checks | | cronhelp fix <input> | Log a fix action — run without args to view recent fixes | | cronhelp cleanup <input> | Record a cleanup operation — run without args to view recent cleanups | | cronhelp backup <input> | Log a backup event — run without args to view recent backups | | cronhelp restore <input> | Record a restore operation — run without args to view recent restores | | cronhelp log <input> | Add a general log entry — run without args to view recent log entries | | cronhelp benchmark <input> | Record a benchmark result — run without args to view recent benchmarks | | cronhelp compare <input> | Log a comparison — run without args to view recent comparisons | | cronhelp stats | Display summary statistics across all log categories | | cronhelp export <fmt> | Export all data to a file (formats: json, csv, txt) | | cronhelp search <term> | Search across all log files for a keyword | | cronhelp recent | Show the 20 most recent activity entries from the history log | | cronhelp status | Health check — shows version, data directory, entry count, disk usage | | cronhelp help | Display available commands and usage information | | cronhelp version | Print current version (v2.0.0) |

Each data command (scan, monitor, report, etc.) works in two modes:

  • With arguments: Records the input with a timestamp into its dedicated log file
  • Without arguments: Displays the 20 most recent entries from that category

Data Storage

All data is stored locally in plain-text log files:

  • Location: ~/.local/share/cronhelp/
  • Format: Each entry is saved as YYYY-MM-DD HH:MM|<value> in per-category .log files
  • History: All operations are additionally logged to history.log with timestamps
  • Export: The export command can generate JSON, CSV, or TXT files from all log data
  • No cloud sync — everything stays on your machine

Requirements

  • Bash 4.0+ (uses set -euo pipefail)
  • Standard Unix utilities: date, wc, du, head, tail, grep, basename, cat
  • No external dependencies, no API keys, no network access required
  • Works on Linux and macOS

When to Use

  1. System monitoring — Record and review periodic scan results, health checks, and alerts across your infrastructure
  2. Backup tracking — Log backup and restore operations with timestamps to maintain an audit trail
  3. Performance benchmarking — Record benchmark results over time and compare them with the compare command
  4. Operational reporting — Generate reports and export collected data in JSON/CSV/TXT for dashboards or further analysis
  5. Troubleshooting — Search across all log categories with cronhelp search to quickly find relevant entries when debugging issues

Examples

# Record a system scan result
cronhelp scan "disk usage at 78% on /dev/sda1"

# Set up a monitoring entry
cronhelp monitor "nginx response time 120ms avg"

# Log an alert for review
cronhelp alert "CPU temperature exceeded 85°C on server-03"

# Record a backup operation
cronhelp backup "full backup completed for /var/lib/postgres — 2.3GB"

# Check overall statistics across all categories
cronhelp stats

# Export everything to JSON for external processing
cronhelp export json

# Search for all entries mentioning "nginx"
cronhelp search nginx

# View recent activity at a glance
cronhelp recent

# Health check — verify the tool is working and see data summary
cronhelp status

Configuration

Set DATA_DIR by modifying the script or symlinking ~/.local/share/cronhelp/ to your preferred location.

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