Returning specific columns upon matching Post: 302917845

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Top Forums Shell Programming and Scripting Returning specific columns upon matching Post 302917845 by Don Cragun on Thursday 18th of September 2014 09:32:10 PM

09-18-2014

Registered User

Quote:

Originally Posted by vamsikrishna928

Thanks for the reply..

Unfortunately, this script is not giving results. The output file is empty. Here is the script I use. Please correct me if there is anything wrong.

Code:

dos2unix fileA
dos2unix fileB
awk 'NR==FNR{A[$1]; next} {for(i=1; i<=NF-5; i++) if($i in A) print $i, $(i+1), $(i+4), $(i+5)}' fileA FS=\| OFS=\| fileB > FileC

I need to get the result set to the new file FileC. Also, if the delimiter in fileB is comma instead of pipeline, where should I need to change..?

Thanks in advance.

Is the text marked in red above your way of saying: "I'm sorry I gave you bad information about my input file format; the field separator is a comma instead of a vertical bar. Can you please help me fix the code you gave me because I made a mistake?"

If that is what you intended to say, you could try something like this instead:

Code:

awk '
{       gsub(/\r/, "")
}
NR==FNR{A[$1]
        next
}
{       for(i=1; i<=NF-5; i++) 
                if($i in A)
                        print $i, $(i+1), $(i+4), $(i+5)
}' fileA FS=',' OFS=',' fileB > FileC

Note that the call to gsub() takes care of the carriage return removal from both of your input files so you no longer need to invoke dos2unix twice.

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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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