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Old 12-11-2005, 10:19 PM   #1
lowlifeish
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Registered: Oct 2002
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Clear Free Memory


Hello,

I have a laptop that was given to me to use for work. I do not have many funds right now, so at home I boot Knoppix on the notebook.

For some reason I feel like my company might take a peek at the remaining data left in memory on bootup. So my question is: how can I clear the linux system memory?

Is there any command line tools that might help me do this?

I have been thinking that I increase the heap size available to Java applications, then writing a Java application that will create an array the size of the free memory, and then setting the entire array to null or something.

However, this will require that I copy the file from some networked location, compile it locally, etc. I feel like I'm running through a lot of hoops.

Is there any easier way?

Thanks for any tips.
 
Old 12-11-2005, 10:33 PM   #2
primo
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See THC's secure-delete at http://www.thc.org/releases.php

There's smem and sswap.
 
Old 12-11-2005, 10:45 PM   #3
lowlifeish
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Wow that's great! The application looks like it is _exactly_ what I am looking for. Thanks for your suggestion!
 
Old 12-12-2005, 12:12 PM   #4
ahedler
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Depending on how much RAM your notebook has, and whether or not you configure a swap file, Knoppix may not leave any tracks at all on the drive. If you have lots of RAM, you may not need to configure a swap file, and if you don't save the configuration or create a homedir, Knoppix will be running directly from RAM and won't touch the drive at all.
 
  


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