Friday, October 14, 2011

Tech Review: Wednesday, October 12, 2011

Open-Source Software and Intellectual Property


  • Opensource defies traditional IP models
Adding Users with 'sudo' Privileges in Linux


  • sudo adduser <username>
  • sudo addgroup <groupname>
  • sudo adduser <username> <groupname>
  • run a pipe commands sudo
  • sudo sh -c "ls > /root/somefile"
  • sudo password is stored for 15 minutes
  • password is not show on screen, even with *, it is input a each key stroke
  • use 'gksudo' or kdesudo' to start graphical applicatons
    • prevents file in home directory being owned by root
  • gksudo "gnome-open %u"
    • lets you drag and drop files as root
  • login as another user
    • sudo -i -u <username>
  • to enable root
    • sudo -i
    • sudo passwd root
  • re-disabling root account
    • sudo passwd -dl root
  • removing the password prompt for sudo
    • sudo visudo
    • add to the end of the file
      • <username> ALL=NOPASSWD: ALL
    • ^x to save file
    • log out and in
  • reset sudo to ask for password
    • sudo -k
US drone fleet infected by virus


  • keys stroke recorder
  • Creech Air Force Base in Mojave Desert
  • wipe from machines, but keeps coming back
  • call to double drones by 2021
  • 12 camera drones sharing data with troops on ground





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