UNIX for Beginners Questions & Answers

As I said before, using cat to send the contents of your chosen file to the mail utility is grossly inefficient and in this case is generating an error that could have been easily avoided if you had followed my suggestion in post #3 in this thread.

In addition to that there is nothing in your find command that has anything to do with finding a file with today's date.

If you would give us clear details about the names and locations of the files from which you want to select today's file(s), how you determine that a file is today's file (Is it part of the name of the file? Is it the last modification timestamp of the file? Is it the last access timestamp of the file? ...), we might be able to make some meaningful suggestions. If you keep us in the dark, all we can do is treat the symptoms indicated by the error messages you are describing to us. Fixing those symptoms might or might not lead you to something that will do what you are trying to do.

Please help us help you.