On Sat, Nov 29, 2025 at 21:31:52 -0500, Lee wrote: > I feel like I'm missing something really basic, but I copied a bunch > of files off my Windows 10 machine to a USB drive.
What kind of file system is on the USB drive? Probably some variant of FAT, yes? > I'm trying to copy > some of those files to my Debian laptop & noticed all the files have > execute permissions .. which is no big deal but they're MP3 files > which aren't programs so it seems like they shouldn't have executable > file permission set. But how do I turn it off??? FAT file systems don't have Unix permissions, so all of the files are shown with the same made-up permissions. mount(8) has a section labeled "Mount options for fat" with lots of options you can specify when mounting the file system. Take a look at the "umask=" option for starters.

