Reference no: EM133265741

Question

Write a tail code that works in xv6, as the name implies, prints the last N number of data of the given input. By default, it prints the last 10 lines of the specified files. If more than one file name is provided then data from each file is preceded by its file name. If no filename is provided, tail should read from standard input. You should also be able to invoke it without a file, and have it read from standard input. Important : (If the first argument does not start with - ), the number of lines to be printed should default to 10).