from sys import argv

script , input_file = argv

def print_all(f):
	print f.read()

def rewind(f):
	f.seek(0)

def print_a_line(line_count,f):
	print line_count , f.readline()

current_file=open(input_file)

print "all lines"

print_all(current_file)

print "tape"

rewind(current_file)

print "lines:"

current_line = 1
print_a_line(current_line,current_file)

current_line=current_line+1
print_a_line(current_line,current_file)

current_line=current_line+1
print_a_line(current_line,current_file)