08-07-2012
Quote:
Originally Posted by
zaxxon
No secret. If you count the number and the arguments that are following, separated by a comma, you see that the 1st part containing the numbers is defining the layout, and the 2nd part is just filling the data in the "fields".
The minus says it is left aligned, the 3 the column is 3 characters wide, and the value supplied should be take as a
s which stands for "string".
And so on...
I have just checked how broad the columns of the heading and your input file is and have defined them for the header as well as for every line that will go through awk.
printf works like this in shell, C, awk, ..., very handy for
printing
formatted
Thanks
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LEARN ABOUT REDHAT
column
COLUMN(1) BSD General Commands Manual COLUMN(1)
NAME
column -- columnate lists
SYNOPSIS
column [-tx] [-c columns] [-s sep] [file ...]
DESCRIPTION
The column utility formats its input into multiple columns. Rows are filled before columns. Input is taken from file operands, or, by
default, from the standard input. Empty lines are ignored.
The options are as follows:
-c Output is formatted for a display columns wide.
-s Specify a set of characters to be used to delimit columns for the -t option.
-t Determine the number of columns the input contains and create a table. Columns are delimited with whitespace, by default, or with
the characters supplied using the -s option. Useful for pretty-printing displays.
-x Fill columns before filling rows.
Column exits 0 on success, >0 if an error occurred.
ENVIRONMENT
COLUMNS The environment variable COLUMNS is used to determine the size of the screen if no other information is available.
EXAMPLES
(printf "PERM LINKS OWNER GROUP SIZE MONTH DAY HH:MM/YEAR NAME
"
; ls -l | sed 1d) | column -t
SEE ALSO
colrm(1), ls(1), paste(1), sort(1)
HISTORY
The column command appeared in 4.3BSD-Reno.
BSD
June 6, 1993 BSD