00359nam a2200133Ia 4500008004100000040001700041041001200058082002000070100001900090245003700109250001200146260005100158300001600209230917s9999||||xx |||||||||||||| ||und||  e228280aMAIN  aEnglish  a005.432 D26U(4)  aDas, Sumitabha 0aUNIX : Concepts and applications  a4th ed.  aNew DelhibMcGraw-Hill Education (India)c2015  axxi, 671 p.