Re: Running su scripts from bash scripts

Method 5:

Use an expects script to handle it asking for a password.

Though, i highly recommend you don't use this option, it is still  
another option.

I would probably choose the "sudo" access option that Dave Riggs  
mentioned above.

Mike.
[email protected]


On Jun 4, 2005, at 6:18 PM, David A. Riggs wrote:

> On Sat, 2005-06-04 at 10:15 -0400, Andrei Smirnov wrote:
>
>> I want to execute these commands in a single script:
>>
>> cd Pictures/2005
>> mkisofs -r -o tmp/Pictures2005.iso .
>> su
>> cdrecord -v -data dev=0,0,0 tmp/Pictures2005.iso .
>>
>> The problem is that after it gets to su it never continues further  
>> with
>> the script. I know there is a way to do it in bash, but I forgot,  
>> and the
>> quick look at the reference material did not lead me to any  
>> example of
>> this kind. In short, I want to execute a set of super-user  
>> commands from
>> within a script. In the simples case, it's ok if the user  
>> executing the
>> script is asked to enter the root password. In the best case he'll  
>> not
>> have to. Any example of that would be appreciated.
>>
>>
>
>
> Method 1: Make cdrecord SUID Root
>
> This lets normal users execute cdrecord with root privileges, which  
> is a
> possible security risk. You should likely restrict this to being group
> executable if you care. Your script stays the same, but you remove the
> 'su' line.
>
> shell> chown root:root `which cdrecord`
> shell> chmod 4111 `which cdrecord`
>
>
> Method 2: 'sudo' Access
>
> Read the documentation on 'sudo' and set up your user or group to have
> passwordless sudo access to cdrecord. Ditto on security concerns. Your
> script removes the 'su' line and prepends cdrecord with 'sudo
> cdrecord...'. You don't even have to make it passwordless if you're
> worried about security.
>
>
> Method 3: Use gnome/kde
>
> Install the nautilus-cd-burner extension or whatever konq's equivalent
> is. Right click the folder Pictures/2005 and choose "burn to CD".  
> Recent
> gnome makes you choose "Go -> CD/DVD Creator" and drag files or  
> folders
> into it. Why deal with the details of creating an iso9660  
> filesystem and
> figuring out which virtual SCSI device to use when the GUI already
> knows?
>
> Method 4: gksu
>
> Replace the last two lines with 'gksu cdrecord...' and a pretty GTK  
> box
> will ask you for the root password and execute your command.
>
>
> - David A. Riggs <riggs at csee dot wvu dot edu>
>
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