Question

Which of the following command is incorrect?

(a) pr dept.lst

(b) head -n 5 emp.lst

(c) tail -o  +5 emp.lst

(d) tail -3 emp.lst

This question was addressed to me in homework.

My question is from Filtering Commands topic in portion Simple Filters of Unix

Answer 1

The correct choice is (c) tail -o  +5 emp.lst

Best explanation: The first command will prepare a file for printing by adding header, footers and formatted text. The command head -n 5 emp.lst will display the first 5 lines of emp.lst while the command tail -3 emp.lst will display the last 3 lines of emp.ls