how to execute commands in script after program is closed

[Quazze]

Hello everyone

I have my music on a different partition, so this means that Banshee Media Player can't play music from my library without me first mounting the partition. So I was thinking of writing a little script that mounts the partition, opens Banshee and remove the partition again after Banshee is closed. Here's what I've got:

sudo mkdir /media/A220742420740199
sudo mount /dev/sda2 /media/A220742420740199
banshee
sudo umount /dev/sda2
sudo rmdir /media/A220742420740199

Now the problem is, I want to be able to run this as a normal executable. If I run it in the terminal everything works fine. But if I just run, not in the terminal (the way I want it), the partition doesn't get mounted. I guess, but am not sure, that the partition gets unmounted again immediately after Banshee is loaded. How do I get this to happen only after Banshee is closed again?

Thanks for the help
Cheers
Lukas

[papibe]

Hi Quazze.

autofs would be a perfect solution for this situation. Take a look at this tutorial.

Let us know how it goes.
Regards.

[LewisTM]

sudo is meant for terminal only. Try gksudo instead.
The simplest would be to invoke your script with gksudo script instead of calling gksudo four times in it.
To execute banshee as yourself (not root) edit the line to look like this:

su <yourname> -c banshee

So to wrap up:

# must be run as superuser
mkdir /media/A220742420740199
mount /dev/sda2 /media/A220742420740199
su <yourname> -c banshee
umount /dev/sda2
rmdir /media/A220742420740199

Cheers!

[Quazze]

thanks for the answers

Hi Quazze.
autofs would be a perfect solution for this situation. Take a look at this tutorial.

From the description it indeed seems what I need, but I don't really seem to understand how it works from this tutorial...

sudo is meant for terminal only. Try gksudo instead.

I might misinterpret this, but I always thought gksudo was for commands running graphical processes?
Also I still then get the problem that, as soon as Banshee is launched, it unmounts the partition immediately after


I also have another question actually. I would want to play my music without having to give my su password. How come if I manually mount the partition I need root permission and when I mount the partition with nautilus I don't?

[LewisTM]

gksudo exists so you can enter the password in a graphical environment. A script run outside of a terminal has not command line prompt to ask for a password so you need gksudo in this case.

Banshee might fork itself in the background on your machine, so that subsequent commands in the script (unmount) will be executed. It doesn't do that on mine but who knows?
To circumvent that you could pause the script and check for the presence of banshee in the running processes every 5 seconds, then resume when it's gone.

while pgrep banshee; do sleep 5; done

Nautilus uses the gio/gvfs framework to mount partitions. You can use that as well. Here's a new script that might work better and without administrator password:

#!/bin/bash
gvfs-mount -d /dev/sda2
banshee
while pgrep banshee; do sleep 5; done
gvfs-mount -u /media/A220742420740199

[Quazze]

nice, this works perfectly

is the

#!/bin/bash

necessary though? Don't fully understand that....

thanks anyway, learned a lot new too

Cheers
Lukas