如何使用bash脚本或终端从ubuntu卸载所有usb笔式驱动器？

Question

I want to unmount all pen drive from ubuntu os through a bash script or from a terminal. I knew the command umount /media/MEDIA_NAME, but here we need to specify each MEDIA_NAME. Can I use a single command to unmount from terminal or bash script. Please help me.

Answer 1

Browsing entries in /dev/disk/by-id/ allows you to select USB disks:

for usb_dev in /dev/disk/by-id/usb-*; do
    dev=$(readlink -f $usb_dev)
    grep -q ^$dev /proc/mounts && umount $dev
done

Answer 2

Loop for each device in the /media directory.

for device in /media/*
do
    umount $device
done