The official 'mascot' of Linux is Tux, the penguin.
You can find complete information herehttp://www.sjbaker.org/wiki/index.php?title=The_History_of_Tux_the_Linux_Penguin
The brand with a penguin and a red scarf around its neck is Linux. It is the official logo for the Linux kernel.
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There are lots of Linux-oriented wikis. There is no official wiki for the Linux kernel.
If you are referring to the band, you can download the official logo from their website. The logo is also displayed on their Facebook pageswhere you could save the logo from the image there.
The Linux kernel sources can be downloaded from the official Linux Kernel Archives, found at the link below.
The official logo points to the right.
The Federal Bureau of Investigation's logo can be found at their official website. There are also frequent photos and updates released that include the logo.
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