Description
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| # tree -a
.
├── a
│ └── .a
├── b
│ └── .b
├── copy
└── target
# cp -r a/.* target
# tree -a
.
├── a
│ └── .a
├── b
│ └── .b
├── copy
└── target
└── .a
# cat copy
cp -r b/.* target
# ./copy
cp: will not create hard link 'target/b' to directory 'target/.'
cp: cannot copy a directory, 'b/..', into itself, 'target'
# tree -a
.
├── a
│ └── .a
├── b
│ └── .b
├── copy
└── target
├── .a
├── a
│ └── .a
├── .b
└── target
├── .a
└── .b
|
Reason
cp -r .* command copy include .. and ..
Solution
cp -r `find b -maxdepth 1 -name ".*"` target
Reference
https://stackoverflow.com/questions/246215/how-can-i-generate-a-list-of-files-with-their-absolute-path-in-linux