I have this error when I want to copy some files

***My command:***

```
cp -rf  /sasech/xgedff/pur/liv/v15h30050-DLIV0177521/dmesa/bin/* /applis/rgedff/pur/bin

```

***Results:***

```
cp: /applis/rgedff/pur/bin/../bin/lib/libtiny.a: Text file busy
...

```

How do I copy my files ?