Tag Archives: Ubuntu

Linux defacements and Linux hacking

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Zone-h.org has an excellent site to see defacements and what is going on across the internet.   Reviewing the archives and live defacements, Linux is defaced (hacked) more times than Windows.   What exactly does this mean?  Is Linux unsafe?  Not at all.  It truly falls on the administrator who configured Linux.   There is a false sense of security when you install Linux based on all of the sites and forums that support Linux’s ability to be safe and reliable.   Truly it can be the safest if the following holds true -

  • Proper configuration
  • Updates
  • Reading materials
  • Frequent penetration tests
  • Monitoring and logging
  • Experience with advanced configurations

Zone-h archives

All operating systems have vulnerabilities.  And yes Apple, Microsoft and Linux is only as safe as the end user.

Install all programs on a newly installed ubuntu system

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If you’re running Ubuntu there is a neat way of installing all of your programs on a newly installed Ubuntu system.
Run the following command on the ‘old’ Ubuntu installation.
“dpkg –get-selections > installed-software”

You’ll end up with a file called installed-software. Copy the file to a usb key and copy it to a location on your backtrack machine.
Run: “dpkg –set-selections < installed-software” in the directory where you copied the file installed-software.
Finally the “sudo apt-get dselect-upgrade” commands completes all of this. Be aware that is might take while until the installtion finishes.

If the above doesn’t work, you probably do not have dselect installed.
In that case, run “apt-get install deselect”
The above instructions also work on BackTrack 5

Clearing Ubuntu Cache Memory

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Did a search for help on clearing up Ubuntu’s Cache System as my system keeps using up my memory for cache system. Though using up my memory for cache doesn’t actually hinder my system’s operation, I find it quite irritating to see it being used up even though I have 8GB of RAM. This command should work for most Debian based Linux Operating System, but I haven’t try them as I don’t own any now. Here is the link to the document.
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