blocks|key|358997|text|我从来没有遇到过这个问题，但我创建了一个~/.crontab文件并对其进行编辑(这允许我备份它，Time+Machine或其他方式)，然后运行|type|unstyled|depth|inlineStyleRanges|entityRanges|data|358998|crontab+~/.crontab|code-block|syntax|javascript|358999|在许多不同风格的unix上为我工作了20%2B几年。|359000|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I've never had this problem, but I create a ~/.crontab file and edit that (which allows me to back it up, Time Machine or otherwise), then run

<pre><code>crontab ~/.crontab
</code></pre>

Has worked for me for 20+ years across many flavors of unix.

blocks|key|140996|text|在user+crontab+(crontab+-e)中，不要放user字段。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|140997|正确的cron是：|140998|0-59+*+*+*+*+echo+"Hello+World"|code-block|syntax|javascript|140999|带有用户字段的语法仅适用于/etc/crontab：|141000|0-59+*+*+*+*+mollerhoj3+echo+"Hello+World"|141001|entityMap^0|F|A|0|0|0|D|C|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|R|$]]

In user crontab (<code>crontab -e</code>) do not put the user field.

Correct cron is:

<pre><code>0-59 * * * * echo "Hello World"
</code></pre>

Syntax with user field is for <code>/etc/crontab</code> only:

<pre><code>0-59 * * * * mollerhoj3 echo "Hello World"
</code></pre>

blocks|key|141046|text|cron和launchd之间的区别|type|unstyled|depth|inlineStyleRanges|entityRanges|data|141047|正如前面提到的，cron被弃用(但支持)，而在OS上建议使用launchd。|141048|这张图片取自developer.apple.com|offset|length|141049|睡眠和断电的影响|141050|如果系统已关闭或处于睡眠状态，则不会执行cron作业；它们将在下一个指定时间之前不会运行。|141051|如果您通过设置StartCalendarInterval键来安排启动的作业，并且计算机在作业本应运行时处于睡眠状态，则作业将在计算机唤醒时运行。但是，如果在作业应该运行时关闭了计算机，则直到下一个指定时间发生时，作业才会执行。|141052|当计算机关闭或休眠时，将跳过所有其他启动的作业；它们不会运行，直到下一个指定时间发生。|141053|因此，如果计算机总是在作业的预定时间关闭，cron作业和启动作业都不会运行。例如，如果您总是在晚上关闭计算机，则计划在凌晨1点运行的作业将永远不会运行。|141054|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/library/mac/documentation/macosx/conceptual/bpsystemstartup/chapters/ScheduledJobs.html^0|0|0|6|J|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|10|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|11|8|@]|9|@$F|12|G|13|1|14]]|A|$]]|$1|H|3|I|5|6|7|15|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|16|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|17|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|18|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|19|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|S|$T|$5|U|V|W|A|$X|Y]]]]

<h1>Difference between cron and launchd</h1>
As has been mentioned cron is deprecated (but supported), and launchd is recommended for OS X.
This is taken from <a href="https://developer.apple.com/library/mac/documentation/macosx/conceptual/bpsystemstartup/chapters/ScheduledJobs.html" rel="noreferrer">developer.apple.com</a>
<h2>Effects of Sleeping and Powering Off</h2>
If the system is turned off or asleep, cron jobs do not execute; they will not run until the next designated time occurs.
If you schedule a launchd job by setting the StartCalendarInterval key and the computer is asleep when the job should have run, your job will run when the computer wakes up. However, if the machine is off when the job should have run, the job does not execute until the next designated time occurs.
All other launchd jobs are skipped when the computer is turned off or asleep; they will not run until the next designated time occurs.
Consequently, if the computer is always off at the job’s scheduled time, both cron jobs and launchd jobs never run. For example, if you always turn your computer off at night, a job scheduled to run at 1 A.M. will never be run.

blocks|key|141069|text|由于一些权限问题，前面的帖子对我不起作用，我发现创建一个单独的crontab文件并使用-u参数将其添加到用户的crontab中，而根用户对我起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|141070|sudo+crontab+-u+{USERNAME}+~/{PATH_TO_CRONTAB_FILE}|code-block|syntax|javascript|141071|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

As the previous posts didn't work for me because of some permissions issues, I found that creating a separate crontab file and adding it to the user's crontab with the -u parameter while root worked for me.

<pre><code>sudo crontab -u {USERNAME} ~/{PATH_TO_CRONTAB_FILE}
</code></pre>

blocks|key|141115|text|另一种选择是根本不使用crontab+-e。相反，我使用了：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|141116|(crontab+-l+&&+echo+"1+1++*+*+*++/path/to/my/script.sh")+%7C+crontab+-|code-block|syntax|javascript|141117|请注意，您在crontab之前打印的任何内容都将替换整个%7C+crontab+-文件，因此请使用crontab+-l+&&+echo+"<your+new+schedule>"获取以前的内容和新的时间表。|141118|entityMap^0|B|A|0|0|S|B|1B|14|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|N|$]]

Other option is not to use <code>crontab -e</code> at all. Instead I used:

<pre><code>(crontab -l &amp;&amp; echo "1 1 * * * /path/to/my/script.sh") | crontab -
</code></pre>

Notice that whatever you print before <code>| crontab -</code> will replace the entire crontab file, so use <code>crontab -l &amp;&amp; echo "&lt;your new schedule&gt;"</code> to get the previous content and the new schedule.

I would like to use cron on my Mac. I choose it over <code>launchd</code>, because I want to be able to use my new knowledge on Linux as well. However, I cannot seem to get the <code>crontab -e</code> command to work. It fires up vim, I enter my test job:

<pre><code>0-59 * * * * mollerhoj3 echo "Hello World"
</code></pre>

But after saving and quitting (<code>:wq</code>),

<pre><code>crontab -l
</code></pre>

says:

<pre><code>No crontab for mollerhoj3
</code></pre>

What am I doing wrong?

Why I've got no crontab entry on OS X when using vim?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想在我的Mac上使用cron。我选择它而不是launchd，因为我也希望能够在Linux上使用我的新知识。但是，我似乎不能让crontab -e命令工作。它启动vim，我进入我的测试工作：0-59 * * * * mollerhoj3 echo "Hello World"但是在保存和退出(:wq)之后，crontab...

问为什么我在使用vim时在OS X上没有crontab条目？
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问为什么我在使用vim时在OS X上没有crontab条目？EN