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...Operating system lab manual basics of unix commands ex no a introduction to aim study about the it is multi user developed at t bell industries usa in ken thomson along with dennis ritchie from multics multiplexed information and computing service os by had been completely rewritten using c language linux similar which created linus torualds all works open source software main feature coexisting other such as windows structure linuxsystem consists three parts kernel b shells tools applications core controls tasks schedule processes carries out functions decides when one programs tops another starts shell command interpreter accepts analyses interprets them p g e basic various editors vi ed emacs content note syn syntax date used check time format purpose example result m display only month h name june d day o y last two digits years hours minutes s seconds cal calendar echo print message on screen text ls list files your are kept directory lsls include prefix l lodetai provide file sta...