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Full Discussion: How to use "awk" to print columns from different files in separate columns?
Top Forums UNIX for Beginners Questions & Answers How to use "awk" to print columns from different files in separate columns? Post 303037452 by Don Cragun on Thursday 1st of August 2019 03:48:12 PM
Old 08-01-2019
Hi Frastra,
Note that the code in your script:
Code:
END{for(x=1;x<=FNR;x++) ... ... ...

takes the value of FNR from the last record read from the last input file you are reading.

Unless each of your *.label input files contain exactly the same number of lines, this is probably not what you want.

H rdrtx1,
The exit in your code:
Code:
awk '{printf $6 " "; exit; } END {print ""}' *.label > fname.txt

will cause your script to use the contents of the sixth field on the first line of the first input file followed by a space as a
Code:
printf

format string (which might or might not be a valid format string), and a newline and then exit your script. Since the ls output shows that the length of your output is two characters, I would assume that the sixth field of the first line of the first input file was empty.
 

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LEARN ABOUT NETBSD

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

	   (echo "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
								   March 9, 2008							       BSD
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