????crontab?????????
1 * * * * * command
2 ??1?б??????1??59 ???????*???? */1???
3 ??2?б??С?1??23??0???0??
4 ??3?б??????1??31
5 ??4?б???·?1??12
6 ??5?б????????0??6??0?????????
7 ??6??????е?????
????crontab??????????????????????????????????sleep????????30????Σ?
1 * * * * * command
2 * * * * * sleep 10; command
3 * * * * * sleep 20; command
4 * * * * * sleep 30; command
5 * * * * * sleep 40; command
6 * * * * * sleep 50; command