I want to grant the 'write' right to one user so they can delete log files in a given directory. These are http log files, so a new one is created each day. The file owner is 'nobody'. If I use the command 'chmod a=rwx *' will this work for the new files created each day.

I've tried the command 'chmod username+rwx *' and I get an error message that reads chmod: ERROR: invalid mode.