Mount/Umount mount point from with a script

ddenial · 08-05-2020, 04:45 PM

Hello All

I'm writing a shell script that will mount/umount LUKS encrypted devices into a directory. I'll add many functions to it later.

For now, I'm stuck on two things:

Mounting: You are in one directory, and you mount a partition on to that same directory. Then you will not see any new files in that directory. You have to move out of that directory and come back to that directory to see files. In script, is there a way to 'kind a refresh' that directory so you see the files?
Unmounting: Same thing. You cannot unmount from that directory when it is your current directory. In shell script, how do I unmount, when I execute the shell script from the same directory?

This is the link for my code in GitHub that I newly created. The shell script is 'myluks.sh'

Right now, I have dealt it with some different way, but I'm not its the right way.

Appriciate any comment/suggestions.

Thanks

berndbausch · 08-05-2020, 06:38 PM

I don't have the time right now to analyze your script, but this should work (relevant commands are in bold blue font):

Code:

#!/bin/bash
cd /mnt/sdb
echo mounting
mount /dev/sdb /mnt/sdb
echo listing1
ls -F         # displays pre-mount list
echo listing2
cd $PWD
ls -F         # displays correct list
echo unmounting
umount /dev/sdb     # fails
cd /tmp
echo unmounting again 
umount /dev/sdb     # succeeds
cd -
echo listing 3
ls -F