crontab 每分钟的写法

* * * * * command

原来是因为crontab无法直接执行bashrc中的环境变量...

@582033 command要写绝对路径

man 5 crontab

写法没错的

个人碰到过crontab唯一坑的地方是
day of month 和 day of week都指定的话，是任意一个满足就会执行，而不是两个都满足才执行。

Note: The day of a command's execution can be specified by two fields —
day of month, and day of week. If both fields are restricted (ie, are
not *), the command will be run when either field matches the current
time. For example, ``30 4 1,15 * 5'' would cause a command to be run at
4:30 am on the 1st and 15th of each month, plus every Friday.

*/1 * * * *
和
* * * * *
均可

楼主运行crontab的时候最好把log输出到一个文件中....用于调试和记录--