Move files found using find command to another directory with struture of source

To move files found using the find command to another directory while maintaining the source directory structure, you can use the cp (copy) command along with the --parents option and then rm (remove) to delete the original files. Here's an example:

find /path/to/search -type f -name "*.txt" -exec sh -c 'cp --parents "{}" /path/to/destination/ && rm "{}"' \;

In this command:

• /path/to/search is the directory where you want to start the search.
• -type f specifies that you are looking for files (not directories).
• -name "*.txt" specifies the pattern to match for file names (replace with your desired file extension or pattern).
• -exec sh -c 'cp --parents "{}" /path/to/destination/ && rm "{}"' \; executes a shell command for each file found. This command copies the file to the destination directory while preserving the directory structure using --parents and then removes the original file.

Finding files with extensions using find command and files which are 90 days old

find /path/to/search -mtime +90 -type f \( -name "*.txt" -o -name "*.pdf" -o -name "*.doc" \)

This will find all the files in directory /path/to/search which are 90 days old and files having extention as txt, pdf, doc. 

Like this you can add many extention and specify time accordingly to find specified days old files.