This might work, but you're living dangerously...

The exit code from cmp is 0 if the files have the same contents, 1 if the contents are different, or some value greater than 1 if an error occurred. Your if condition is ignoring the error case and treating it as if the files compared equal when the comparison was not completed. (This might cause you to remove files that you couldn't compare.)

There is no need to redirect standard output from cmp -s since nothing is written to standard output when the -s option is present.

You might want to try this alternative (although I would still like to see a trace showing what failed in the script I suggested in post #10):

Code:

find /home/u11/payments -type f | while read -r f
do	printf 'Comparing file "%s" with "%s"...\n' "$f\" "$Filename"
	if cmp -s -- "$Filename" "$f"
	then	printf 'is not different\nRemoving "%s" now\n' "$f"
		rm -- "$f"
	else	echo 'is different or error encountered'
	fi
done

Using find ... | while read f allows the find command and the compare loop to run in parallel.

Using for f in $(find ...) requires the find command to complete before the compare loop starts.

Although your current filenames might not contain any spaces, tabs, or other characters special to the shell, quoting the expansions of $f and $Filename will keep your script running smoothly if conditions like that arise in the future. Similarly, preceding the file name operands to cmp and rm with -- protects against file names that might start with a minus sign (-) from being interpreted as options instead of as operands. And, the behavior of echo varies from system to system and shell to shell if the 1st operand given to echo starts with a minus sign or if any operand contains a backslash (\) character (both of which are possible from the expansions of $f and $Filename in your script). Using printf with a format string operand instead of echo avoids these possible problems.

Hope this helps...