时间格式如下：
CRON Expression Format ¶ A cron expression represents a set of times, using 5 space-separated fields.
| Field name | Mandatory? | Allowed values | Allowed special characters |
|---|---|---|---|
| Minutes | Yes | 0-59 | * / , - |
| Hours | Yes | 0-23 | * / , - |
| Day of month | Yes | 1-31 | * / , - ? |
| Month | Yes | 1-12 or JAN-DEC | * / , - |
| Day of week | Yes | 0-6 or SUN-SAT | * / , - ? |
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.
| Entry | Description | Equivalent To |
|---|---|---|
| @yearly (or @annually) | Run once a year, midnight, Jan. 1st | 0 0 0 1 1 * |
| @monthly | Run once a month, midnight, first of month | 0 0 0 1 * * |
| @weekly | Run once a week, midnight between Sat/Sun | 0 0 0 * * 0 |
| @daily (or @midnight) | Run once a day, midnight | 0 0 0 * * * |
| @hourly | Run once an hour, beginning of hour | 0 0 * * * * |
- 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" .