bug#23449: cp command error report

[Paul Eggert]

On 05/04/2016 02:10 AM, Bruce.Zhang wrote:
> When I run the command like this "/bin/cp -rf /root/update/*  /www"  .  I
> find some file's permissions  is update but  the file's content not update .
>
>   
>
> I do not known what happened .

Nor does anyone else. :-)  I suggest running your command under strace, 
e.g.,:

strace -o foo.log /bin/cp -rf /root/update/* /www

and then looking at foo.log to see what happened. The idea is that you 
need to create a complete, self-contained test case that will let us 
reproduce the bug.