tail
tail is a simple utility that displays the last n lines of a file, or input. By default, it prints the last 10 lines. To control the number of lines printed, use the -n flag.
tail myfile.txtOutput
line91 line92 line93 line94 line95 line96 line97 line98 line99 line100
tail -n 3 myfile.txtOutput
line98 line99 line100