Question

I thought doing a sync in my bash script would force the file to be completely written out. When I looked at the thumb drive, it showed all the files I had copied, but after a power supply failure, the usb drive showed 0 files. Do I have to eject the drive manually or is there something I can do programmatically in my script?

Answer 1

If you want to eject the usb device from your bash script a simple umount on the device should do the trick. For example

mount /dev/usb /mnt/usb
# Your copy operations here... then on success:
umount /mnt/usb