[K12OSN] cron job how to

[Petre Scheie]

Following Burke's suggestion, run

chmod g+s

on the folder.  This will force the group for each file to be the group of the folder 
itself, which the teacher is a member of, and so the teacher should have access to the 
files.  Another approach would be to put the teacher's ID into each student's group, but 
that sounds like a lot more work.

Petre

Burke Almquist wrote:
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> You could also setuid the folder so that items within it would be  owned 
> by the teacher.
> 
> On Sep 8, 2005, at 10:40 PM, Liam Marshall wrote:
> 
>> I have a "homework folder" for each computer class where the owner  is 
>> the teacher of the class, the group is the group associated with  that 
>> class.  owner has read write execute, group has write and  execute.  
>> So effectively, they can drag/drop off their assignments  into this 
>> folder, and after they close the window, can't access  their own file, 
>> effectively "handing in" their assignment.
>>
>> I was quite pleased with myself until I went into one of my own  class 
>> homework folders.  I can see all the files( this is good) but  cannot 
>> open any!(this is bad!)  for myself I could get around this  by 
>> logging in as root and harvesting the files to mark but of  course do 
>> not want the other teachers to be able to do that.  I am  assuming 
>> that the problem lies with permissions, in that when  student a 
>> creates a file by dragging it into the homework folder,  the 
>> permissions for THAT file become theirs, as in they become the  owner 
>> of that file, and not the teacher.  I would love for created  files to 
>> be owned by the teacher.  Am I right in that?
>>
>> The only way I can think of around this is to write a little bash  
>> script that chown's the files in the class homework folder to  change 
>> all file ownership back to class teacher.  I am sure I could  write 
>> this script and execute it manually but have no idea how to  automate 
>> it.  I have heard and read about scheduling such an animal  as a "cron 
>> job" but have no idea how to schedule/set up such a thing
>>
>> I would really appreciate help with this.
>>
>> Thanks
>>
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