PPT Slide
Note typical use of I/O system calls in Figure 3.3
file - passive container of data; a named sequence of bytes
open file - active sources and sinks for data
Notice the “behind the scenes” data management that occurs with an open file
Figure 3.4 & 3.5 relate the objects and operations on those objects within an operating system
Trace the File Copy & Reverse programs as well as arrow-happy Figure 3.6!