==> out_file_name_1 <==
x11,x21
x12,x22
==> out_file_name_2 <==
x13,x23
x14,x24
x15,x25
==> out_file_name_3 <==
x16,x26
x17,x27
x18,x28
x19,x29
----
GNU bash, version 4.3.30(1)-release (i586-pc-linux-gnu)
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://g...content-available-to-author-only...u.org/licenses/gpl.html>
This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.