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I am looking for a way to check if a drive is plugged in but not mounted. I have a USB drive which I use as an offsite backup. I have a script which mounts the disk, does an rsync with the primary backup drive and then unmounts the drive and sends an email to the I.T department to say the backup is finished. What I want to do now is create a script that keeps checking if the drive has been unplugged and sends an email every 15 minutes or so as a reminder to disconnect the drive. I thought about checking the output of 'fdisk -l' and then using grep to check for the drive name (/dev/sdc) but was wondering if this is a sound way to do it or if there is a more specialized way to check this?
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