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    <title>Crontab · Vixyun · Tools &amp; Content</title>
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    <description>1 post tagged “Crontab”.</description>
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      <title>How to read a cron expression: day and weekday are ORed, and when the next run really is</title>
      <link>https://vixyun.top/posts/cron-expression-how-to-read/</link>
      <pubDate>Sun, 04 Oct 2026 11:20:00 +0800</pubDate>
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      <description>Why */5 aligns to midnight, not to your last run, the day-or-weekday union rule (0 0 13 * 5 runs 62 times a year), the 29 Feb wait, DST, and a checklist.</description>
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