Nice to meet you all.I am a new comer from ChengDu,China.I am very interested in Unix and PDP an now I am reading the book <Lions’ Commentary on UNIX 6th Edition with Source Code> ,which make me so excited.It's indeed an great book for me to understand the principle and detail of the UNIX, however, I am a  self-learner without chance to discuss with others around me, so I am glad to join you and have a chance to learn from all of you. Thanks!
Best Regards
 Tian Wen