This is a question for Linux:

Write-protect for everyone hidden files and directories in /tmp with names beginning with 5, 6, 7, or 8 and ending with a capital letter (A-Z).

You must do this using shell expansion characters. You do not know your present working directory. (You will be using a single command to answer this question).

Hints:

Take away the write permission for everyone using the symbolic (not octal) notation.

You need to use 2 character classes. One at the beginning of a file name for digits and one at the end for letters.

The middle of the file name can be anything.

Do not forget to include /tmp/ in front of the wildcard expression.