## Cron Expressions Layout
Cron expressions are syntax strings used to schedule background jobs in Unix systems. A standard expression contains five whitespace-separated fields:
```
* * * * *
│ │ │ │ │
│ │ │ │ └─ Day of the Week (0 - 6)
│ │ │ └─── Month (1 - 12)
│ │ └───── Day of the Month (1 - 31)
│ └─────── Hour (0 - 23)
└───────── Minute (0 - 59)
```
### Common Shortcuts
- `*/5 * * * *`: Run every 5 minutes.
- `0 0 * * *`: Run daily at midnight.
- `0 12 * * 1`: Run every Monday at noon.
Deep Dive into Cron Expressions: Scheduling Tasks in Linux
"Learn the layout of cron expressions. Understand minute, hour, day, and month fields, and schedule Linux jobs with confidence."
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