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Full Discussion: Match column 8 in file 1 with column 2 in file 2 and replace..
Top Forums Shell Programming and Scripting Match column 8 in file 1 with column 2 in file 2 and replace.. Post 302960753 by kieranfoley on Thursday 19th of November 2015 08:22:54 AM
Old 11-19-2015
Hi thanks! That works great but I should have said that file 1 can have more that 9 columns. For example this

Code:
Switch_10,10:00:00:05:1e:36:6b:98,OAKS_PA,7,3,614300,N8,20000025b520102e,HOSTNAME_INFO,fnic v1.4.0.98 over fnic1
Switch_10,10:00:00:05:1e:36:6b:98,OAKS_PA,7,1,614100,N8,20000025b520102e,HOSTNAME_INFO,fnic v1.4.0.98 over fnic1


In this scenario I would need to do the following. Correct?

Code:
awk -F, 'FNR==NR{A[$2]=$1;next} ($8 in A){$9=A[$8];print $0} !($8 in A){print $0}'  OFS=, file2 file1

Thanks again!
Last edited by kieranfoley; 11-19-2015 at 09:30 AM..
 

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LEARN ABOUT OSX

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
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