crontab 配置参考

时间格式如下：

CRON Expression Format ¶ A cron expression represents a set of times, using 5 space-separated fields.

Note: Month and Day-of-week field values are case insensitive. "SUN", "Sun", and "sun" are equally accepted.

Special Characters ¶ Asterisk ( * )

The asterisk indicates that the cron expression will match for all values of the field; e.g., using an asterisk in the 5th field (month) would indicate every month.

Slash ( / )

Slashes are used to describe increments of ranges. For example 3-59/15 in the 1st field (minutes) would indicate the 3rd minute of the hour and every 15 minutes thereafter. The form "*/..." is equivalent to the form "first-last/...", that is, an increment over the largest possible range of the field. The form "N/..." is accepted as meaning "N-MAX/...", that is, starting at N, use the increment until the end of that specific range. It does not wrap around.

Comma ( , )

Commas are used to separate items of a list. For example, using "MON,WED,FRI" in the 5th field (day of week) would mean Mondays, Wednesdays and Fridays.

Hyphen ( - )

Hyphens are used to define ranges. For example, 9-17 would indicate every hour between 9am and 5pm inclusive.

Question mark ( ? )

Question mark may be used instead of '*' for leaving either day-of-month or day-of-week blank.

Predefined schedules ¶ You may use one of several pre-defined schedules in place of a cron expression.

Go在Window平台下编译出来的exe如何添加一个图标

• 下载图标ico,命名为logo.ico
• 创建exe同名rc文件,例:crontab.rc

  IDI_ICON1 ICON "logo.ico"
  

• 生成syso文件

  windres -o crontab.syso crontab.rc
  

• 编译

  go build .
  

有窗口,可以用来调试

go build -ldflags "-X 'main.version=$(git rev-parse --short HEAD)'" .

无窗口模式

go build -ldflags "-X 'main.version=$(git rev-parse --short HEAD)' -H windowsgui" .