I understand that grep matches all the blank lines for the pattern ^$. But what does just ^ means. When I gave grep '^' filename. It matched all the lines. Also grep '' filename matched all the lines ...
Usually when we install Windows after installing GNU/Linux, we usually lose the Grub. Which is the best way to recover grub when we lost grub or what are the possible different ways.
I need enable TCP connections to my system, for use graphical applications in marionnet, network simulation system, in debian squeeze. In older versions of debian it is achieved with ...