When copying folders with sudo it copies just the first level of folder's hierarchy

Question

When I copy some directory (dir) recursively with sudo in bash it copies just the first level of the dir hierarchy, but when used without sudo it copies the dir with all its subdirs, though commands in command-line have the difference only in the presence of sudo.

Why does this happen?

For example:

k@l:/$ tree
.
|
|__a
|  |
|  |__b
|     | 
|     |__1.htm   
|
|__c
k@l:/$ sudo cp -r /a/b /c/d
k@l:/$ cd /c
k@l:/c$ ls
d
k@l:/c$ cd d
bash: cd: /c/d: Permission denied
k@l:/c$ tree
.
|__d [error opening dir]

1 directory, 0 files

Answer 1

Maybe /c/d had permissions 700 with a different owner. Try sudo chmod -R 755 /c/d.