•
Alt
,
Alt
+
F1
: a key to press or a key combination; keys are shown in uppercase
as on a keyboard
• File, File → Save As: menu items, buttons
• ►amd64 ipf: This paragraph is only relevant for the specified architectures. The
arrows mark the beginning and the end of the text block.◄
• Dancing Penguins (Chapter Penguins, ↑Reference): This is a reference to a chapter
in another book.
3 Acknowledgments
The Linux operating system has developed over a period of several years from a one-
man show of the inventor, Linus Torvalds, into a fantastic project to which countless
developers from all over the world have contributed. Thanks are due to everyone who
has helped make this project a success.
vi
Architecture-Specific Information
