* * * * * /bin/bash > > $date.test
重点在>>追加至$date.test
[root@iZwz99ogf5jy03z7ko76k8Z /root/script]# crontab -l
07 03 * * * mkdir -p /root/script/autoBackup/ABlog 2>/dev/null; sh /root/script/autoBackup/01AB.sh >> /root/script/autoBackup/ABlog/`date +\%F`AB.log 2>&1
重点在于'%'前面的'\'