comando che catta file riga per rica

[KornShell]

#!/usr/bin/env python
fileinput = open('/path/filename', 'r')
fileoutput = open('/path/newfile?, 'w')
for lines in fileinput.readlines():
    tmp_list = lines.split()
    fileoutput.write(tmp_list[0])
    fileoutput.write('\n')