How can I run command every six hours every day? Tried this not working :
我怎么能每天六小时执行一次命令?尝试了这个无效:
/6 * * * * * mycommand
5 个解决方案
#1
287
You forgot a * ,and you've too many fields, and it's the hour you need to care about
你忘记了一个*，你有太多的字段，这是你需要关心的时间
0 */6 * * * /path/to/mycommand
This means every 6th hour starting from 0, i.e. at hour 0, 6, 12 and 18 Which you could write as
这意味着每6个小时从0开始，也就是0 6 12 18，你可以写成
0 0,6,12,18 * * * /path/to/mycommand
#2
6
You should include a path to your command, since cron runs with an extensively cut-down environment. You won't have all the environment variables you have in your interactive shell session.
您应该包括一条通往您的命令的路径，因为cron运行的是一个广泛的关闭环境。在交互式shell会话中不会有所有的环境变量。
It's a good idea to specify an absolute path to your script/binary, or define PATH in the crontab itself. To help debug any issues I would also redirect stdout/err to a log file.
最好指定到脚本/二进制文件的绝对路径，或者在crontab本身中定义路径。为了帮助调试任何问题，我还将把stdout/err重定向到日志文件。
#3
4
0 */6 * * * command
0 */6 * * *命令。
This will be the perfect way to say 6hrs a day.
这将是每天说6小时的最佳方式。
Your command puts for 6 mins.!
你的命令持续6分钟。
Thanks.
谢谢。
#4
0
0 */6 * * *
0 */6 * * * *
crontab every 6 hours is a commonly used cron schedule.
crontab每6小时为常用的cron计划。
Thanks,
谢谢,
#5
0
Try:
试一试:
0 */6 * * * command
0 */6 * * *命令。
. * has to
。*必须
#1
287
You forgot a * ,and you've too many fields, and it's the hour you need to care about
你忘记了一个*，你有太多的字段，这是你需要关心的时间
0 */6 * * * /path/to/mycommand
This means every 6th hour starting from 0, i.e. at hour 0, 6, 12 and 18 Which you could write as
这意味着每6个小时从0开始，也就是0 6 12 18，你可以写成
0 0,6,12,18 * * * /path/to/mycommand
#2
6
You should include a path to your command, since cron runs with an extensively cut-down environment. You won't have all the environment variables you have in your interactive shell session.
您应该包括一条通往您的命令的路径，因为cron运行的是一个广泛的关闭环境。在交互式shell会话中不会有所有的环境变量。
It's a good idea to specify an absolute path to your script/binary, or define PATH in the crontab itself. To help debug any issues I would also redirect stdout/err to a log file.
最好指定到脚本/二进制文件的绝对路径，或者在crontab本身中定义路径。为了帮助调试任何问题，我还将把stdout/err重定向到日志文件。
#3
4
0 */6 * * * command
0 */6 * * *命令。
This will be the perfect way to say 6hrs a day.
这将是每天说6小时的最佳方式。
Your command puts for 6 mins.!
你的命令持续6分钟。
Thanks.
谢谢。
#4
0
0 */6 * * *
0 */6 * * * *
crontab every 6 hours is a commonly used cron schedule.
crontab每6小时为常用的cron计划。
Thanks,
谢谢,
#5
0
Try:
试一试:
0 */6 * * * command
0 */6 * * *命令。
. * has to
。*必须