00334nam a2200109 a 450000500170000002000150001708200200003210000200005224500900007226000400016230000220020220251203092007.0  a0805375686  a005.43,bD, sob  aSobell, Mark G.  aHands-on Unix: a practical guide with the essentials of coherent, Mark G. Sobell, eng  aMenlo Park, Benjamin/Cummingsc1994  axxxii,831p.c20cm