col1 .. col9, NF - awk and print a column (based on the name of the program, 1-9)

       This manpage and the utility was written by Dustin Kirkland <kirkland@ubuntu.com> for Ubuntu systems (but
       may  be used by others).  Permission is granted to copy, distribute and/or modify this document under the
       terms of the GNU General Public License, Version 3 published by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-
       licenses/GPL, or on the web at http://www.gnu.org/licenses/gpl.txt.

byobu                                              27 Sep 2010                                           col1(1)

col1  is a simple script that conveniently splits and prints a given column, where the column to print is
       the name of the script program you're  running  (col1-col9).   col2-col9  are  symlinks  to  col1;  their
       behavior simply changes based on the name called.

       NF can be used to print the last field.

       The program takes one optional argument, the input field separator (whitespace, by default).

       Rather than:
        mount | awk '{print $3}'

       Try:
        mount | col3

       Instead of:
        cat /etc/passwd | awk -F":" '{print $7}'

       You can just do:
        cat /etc/passwd | col7 :

       Or
        cat /etc/passwd | NF :

       col1 .. col9, NF - awk and print a column (based on the name of the program, 1-9)

awk(1)

col1[SEPARATOR]