devil book meaning

• [Computer]
  <publication> "The Design and Implementation of the 4.3BSD Unix Operating System", by Samuel J. Leffler, Marshall Kirk McKusick, Michael J. Karels, and John S. Quarterman (Addison-Wesley Publishers, 1989, ISBN 0-201-06196-1).
  
  The standard reference book on the internals of BSD Unix. So called because the cover has a picture depicting a little devil (a visual play on daemon) in sneakers, holding a pitchfork (referring to one of the characteristic features of Unix, the "fork(2)" system call).

• "devil book" meaning in Chinese: 恶魔书；Unix作业系统书
• "devil book" meaning in Japanese: 〈米俗〉トランプ