Substitution in a file with the name of the file itself

Hello,     Does anybody knows how to write a task in order to substitute in all the files of a directory a given pattern by the name of the matched file ?     Thanks in advance.     Etienne. **

Pb with copy and present selector

Hello, I'm trying desperately to overwrite files from a source directory if they exist in a target directory. The source and target directory have not the same hierarchy, source is flat and directory has sublevels. Example of hierarchy: root/source/A.html root/source/B.html root/source/C.html