On an external hard disk, I have MP3 files. Some of them have the permissions 0777:
ls -l 1*
-rwxrwxrwx 1 ronaldfischer staff 16246125 Dec 10 18:09 1_SuicidalTrauma__MyMemories.mp3
Since the x-bit does not make sense for an audio file, I tried to adjust the permissions, but none of the following produced any change in the permissions:
chmod -x 1* chmod u-x 1* chmod ugo-x 1* chmod 0666 1*
What could be the reason? Disk Utility describes the file system on that volume as USB External Physical Volume. I had formatted the disk originally under Windows as ExFAT.