Join multiple files by column with awk Post: 302427091

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Top Forums Shell Programming and Scripting Join multiple files by column with awk Post 302427091 by cgkmal on Thursday 3rd of June 2010 09:11:43 PM

06-03-2010

Registered User

Hi macsx82,

Well using Franklin52 script in thread you suggested here I get this approach, but partially does what you need, maybe
AWK experts may correct and enhance this script or give us a new better solution.

Code:

WHINY_USERS=1 awk 'BEGIN{ print "chr","Position"} NR==FNR{ a[$1]=$4; s[$1]=$2 " " $3 " " $4; next } {
  s[$1] = s[$1] " " $4;
}
END{for(i in s) {print s[i]}}' file*

chr Position
5 164388439 -0.4241 0.0736 0.2449
5 165771245 0.4448 0.1811 -0.0163
5 165772271 0.4321 0.2955 0.3361
5 166325838 0.0403 -0.118 0.0307
5 166710354 0.2355 0.1529

This script uses file1, file2 and file3 as input file.

Note:
It�s still needed: (missing things are shown in red)
1-) Add headers to respective files; and
2-) Manage better the missing line in file2 in order to locate "blank values" in correct positions.

Code:

chr Position file1 file2 file3
5 164388439 -0.4241 0.0736 0.2449
5 165771245 0.4448 0.1811 -0.0163
5 165772271 0.4321 0.2955 0.3361
5 166325838 0.0403 -0.118 0.0307
5 166710354 0.2355  <tab delimiter> 0.1529

Last edited by cgkmal; 06-03-2010 at 10:17 PM..

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LEARN ABOUT DEBIAN

colrm

COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME

     colrm -- remove columns from a file

SYNOPSIS

     colrm [start [stop]]

DESCRIPTION

     The colrm utility removes selected columns from the lines of a file.  A column is defined as a single character in a line.  Input is read
     from the standard input.  Output is written to the standard output.

     If only the start column is specified, columns numbered less than the start column will be written.  If both start and stop columns are spec-
     ified, columns numbered less than the start column or greater than the stop column will be written.  Column numbering starts with one, not
     zero.

     Tab characters increment the column count to the next multiple of eight.  Backspace characters decrement the column count by one.

ENVIRONMENT

     The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7).

EXIT STATUS

     The colrm utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     awk(1), column(1), cut(1), paste(1)

HISTORY

     The colrm command appeared in 3.0BSD.

BSD
								  August 4, 2004							       BSD