英文:
Is it possible to create my own crontab special string?
问题
计划任务程序包括八个以“@”开头的特殊字符串：@reboot，@yearly等... (man 5 crontab)。我想创建自己的：@five_minutes = */5 * * * *。
但是否有办法在crontab中创建新的特殊字符串？
英文:
The cron daemon includes eight special strings, starting with "@" : @reboot, @yearly etc... (man 5 crontab). And I would like to create my own: @five_minutes = */5 * * * *.
But is there a way to create new special strings in crontab?
答案1
得分: 0
不，语法不允许这样做。
也许你可以为你的格式编写一个简单的解析器，然后从中生成你实际的 crontab。
sed 's%^@five_minutes%*/5 * * * *%' crontab.in | crontab -。
对于这个特定的简单用例，学习正确的语法似乎是一个更简单和更可靠的解决方案。
英文:
No, the syntax does not allow anything like this.
Perhaps you could write a simple parser for your format, and generate your actual crontab from that.
sed 's%^@five_minutes%*/5 * * * *%' crontab.in | crontab -
For this particular simple use case, learning the proper syntax seems like a much simpler and more robust solution.
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