小编Cas*_*ort的帖子

我在MySQL中有一个具有以下权限的用户:

GRANT USAGE ON *.* TO 'certain_db'@'192.168.1.1' IDENTIFIED BY PASSWORD '****'
GRANT ALL PRIVILEGES ON `certain_db`.* TO 'certain_db'@'192.168.1.1'

如果删除此数据库,我是否保留以后创建它的权限？

码:

DKIM_RECORD='v=DKIM1\;t=s\;n=core\;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr0WehGwX2nEq4WY3OmiGnYtRt2941lJBsoDMV485apTs4MagWxuzRCkil7/A9fV/FJdt+bzRcdgurcZBbrwI5PpfACUP4ghL9ZU8H9lwbWIGNu0hpqEE+0cdigB1S54B7Fj/AXx5hA9nBuNA27KD+hpBx4ToUIDhDFy9A6BodO6yHr/CkccGuZJO7dMPMWyycx+CTaJSB4fDQmwtPbYf9NHaucud0h902DIajfiJpZ4CEvCjNU8pcsAXecCBLqnWLkj2b7AxYpX+A4+z1GR5mul1IQQcfkspm1v/ihdWZ+FogtquMpos9u+6OSnXkQfYW83XED6hNE335kgoSDAWgQIDAQAB'
DKIM_RESPONSE=`dig @ns0.transip.net default._domainkey.randomdomain.nl TXT +short | tr -d '" ' `

if [[ $DKIM_RESPONSE != $DKIM_RECORD ]]; then
    echo "$DKIM_RESPONSE"
    echo "$DKIM_RECORD"
    echo "randomdomain.nl: DKIM failed"
fi

结果:

v=DKIM1\;t=s\;n=core\;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr0WehGwX2nEq4WY3OmiGnYtRt2941lJBsoDMV485apTs4MagWxuzRCkil7/A9fV/FJdt+bzRcdgurcZBbrwI5PpfACUP4ghL9ZU8H9lwbWIGNu0hpqEE+0cdigB1S54B7Fj/AXx5hA9nBuNA27KD+hpBx4ToUIDhDFy9A6BodO6yHr/CkccGuZJO7dMPMWyycx+CTaJSB4fDQmwtPbYf9NHaucud0h902DIajfiJpZ4CEvCjNU8pcsAXecCBLqnWLkj2b7AxYpX+A4+z1GR5mul1IQQcfkspm1v/ihdWZ+FogtquMpos9u+6OSnXkQfYW83XED6hNE335kgoSDAWgQIDAQAB
v=DKIM1\;t=s\;n=core\;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr0WehGwX2nEq4WY3OmiGnYtRt2941lJBsoDMV485apTs4MagWxuzRCkil7/A9fV/FJdt+bzRcdgurcZBbrwI5PpfACUP4ghL9ZU8H9lwbWIGNu0hpqEE+0cdigB1S54B7Fj/AXx5hA9nBuNA27KD+hpBx4ToUIDhDFy9A6BodO6yHr/CkccGuZJO7dMPMWyycx+CTaJSB4fDQmwtPbYf9NHaucud0h902DIajfiJpZ4CEvCjNU8pcsAXecCBLqnWLkj2b7AxYpX+A4+z1GR5mul1IQQcfkspm1v/ihdWZ+FogtquMpos9u+6OSnXkQfYW83XED6hNE335kgoSDAWgQIDAQAB
randomdomain.nl: DKIM failed

不知何故,两个字符串似乎相等,但bash评估为不等.这里出了什么问题？