Understanding UNIX by Stan Kelly-Bootle (1999, Trade Paperback)

The Unix Programming Environment (Prentice-Hall Software Series) - paperback...

Understanding Unix

UNIX Internals: The New Frontiers - Paperback By Vahalia, Uresh - GOOD

Design of the UNIX Operating System Paperback Maurice Bach

Unix for VMS Users (Digital Press Vax - Paperback, by Bourne Philip - Acceptable

Understanding Unix - Kelly-Bootle, Stan - Good - See condition notes