How to update cygwin /etc/passwd to get all latest windoze users

mkpasswd -cl > /etc/passwd

mkgroup --local > /etc/group

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http://www.howtogeek.com/howto/windows-vista/enable-the-hidden-administrator-account-on-windows-vista/

Enable Built-in Administrator Account / start dos-shell with right click: 'Run as administrator':
  net user administrator /active:yes

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