Hi I just need help to know how to rename and move file from the new to old directory in linux can someone please help me thank you

Modify and move files: Utilize Linux commands to rename files and copy them to a different directory in preparation for the backup script in the following section. Rename the files by adding the suffix _OLD to them, and move the files from the NEW directory to the OLD directory. 3 Remember that your modified files should use an appropriate naming convention: XXXX_XXXX_OLD.txt. Ensure that your modified files reside in the OLD directory, and that your original files reside in the NEW directory.

for the files for Personal_Content.txt to become Personal_Content_OLD.txt and it is placed in the NEW directory and now I want it to place in the OLD directory but copied from the new directory but how can I do that.