dongxu1668 2014-01-09 16:21
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Ubuntu cron没有执行,但在命令行上工作正常

I have a backup cron job that is supposed to run once a week. It works perfectly fine when I execute it on the command line, but it never executes in cron. My other cron tasks execute without issue. I assume it must have something to do with my options or incorrect syntax. Here is the cron entry in question:

10 10 * * 0 php ~/v2/symfony/symfony cc; tar -czf ~/backups/schroeder/v2/v2_site_backup_`date +%Y-%m-%d_%H-%M`.tgz ~/v2/symfony | tee -a ~/log/weekly_backup.log

SOLUTION Turns out I needed to escape the % when inputting it my cron list. So the command that works is:

10 10 * * 0 php ~/v2/symfony/symfony cc; tar -czf ~/backups/schroeder/v2/v2_site_backup_`date +\%Y-\%m-\%d_\%H-\%M`.tgz ~/v2/symfony | tee -a ~/log/weekly_backup.log
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  • dongleiqiao2107 2014-01-09 16:22
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    crontab has a very small environment, so you have to indicate full paths.

    10 10 * * 0 /path/of/php /home/your_user/v2/symfony/symfony cc; tar -czf /home/your_user/backups/schroeder/v2/v2_site_backup_`date +%Y-%m-%d_%H-%M`.tgz /home/your_user/v2/symfony | tee -a /home/your_user/log/weekly_backup.log
               ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^                                 ^^^^^^^^^^^^^^^                                                                 ^^^^^^^^^^^^^^^                     ^^^^^^^^^^^^^^^
    

    instead of

    10 10 * * 0 php ~/v2/symfony/symfony cc; tar -czf ~/backups/schroeder/v2/v2_site_backup_`date +%Y-%m-%d_%H-%M`.tgz ~/v2/symfony | tee -a ~/log/weekly_backup.log
    

    That is, change all ~ for /home/your_user/.

    Also! Escape each % as read here:

    date +%Y-%m-%d_%H-%M
    

    has to be

    date +\%Y-\%m-\%d_\%H-\%M
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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