00382nam a2200145 a 450000500170000002000150001708200210003210000210005324500380007426000320011230000230014463000210016763000370018863000110022520251203092019.0  a8185386889  a005.432,D,Hecb_  aHeck, Hans-Josef  aUNIXbWorking with Unix and Xenix  aNew DelhibA.I.T.B.S.c1994  a335 p.b18 cm.cPB  aComputer Science  aUNIX (Computer Operating system)  amanual