Redhat 8:升级问题

新特性：

tmp 目录下的文件没有执行权限：

<-a:root>/tmp:
# more mark2.log
    #!/opt/LU3P/bin/ksh
    cd /tmp
    rm -f queryout14287
<-a:root>/tmp:
# ll mark2.log
-rwxrwxrwx 1 root root 327 Jan  4 14:51 mark2.log
<-a:root>/tmp:
# ./mark2.log
/usr/bin/ksh93: ./mark2.log: **cannot execute [Permission denied]**

ntp 到chrony 转换

./conf