以下任务计划的含义是什么？（） SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root 10 4 1,10,22 * * root /root/backup.shA．在每月1、10、22日的4:10执行/root/backup.sh文件B．在10月4号的1、10、22点执行/root/backup.sh文件C．在10年的4月1号，10点-22点执行/root/backup.sh文件D．22点分别执行/root/backup.sh文件
以下任务计划的含义是什么？（） SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root 10 4 1,10,22 * * root /root/backup.sh
A．在每月1、10、22日的4:10执行/root/backup.sh文件
B．在10月4号的1、10、22点执行/root/backup.sh文件
C．在10年的4月1号，10点-22点执行/root/backup.sh文件
D．22点分别执行/root/backup.sh文件
参考答案和解析
在每月1、10、22日的4:10执行/root/backup.sh文件
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