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Full Discussion: Join using awk
Top Forums Shell Programming and Scripting Join using awk Post 302383698 by nbethy1 on Thursday 31st of December 2009 12:52:11 AM
Old 12-31-2009
Join using awk
Hi -

I want to join 2 files on matching keys ( column 1 in both files ) and check for unmatched columns, If for each record print the first unmatched column from both files and then proceed to next record and do the same.

File 1:

Code:
123|Roy|jj|20/07/3000|25.48
125|Victor|kk|30/07/2009|34.56
234|Nag|aa|15/03/2009|234.45

File2:
Code:
123|Ray|jj|20/07/2009|25.48
125|Victor|kick|30/07/2009|34.56
234|Nag|aa|15/03/2009|434.45
132|rita|bb|15/03/2009|134.45

Output:
Code:
123|Roy|Ray
125|kk|kick
234|234.45|434.45

I was able to do following but couldn't get to stop processing after first mismatched column for each record. this is what I did

Code:
awk -v File1="$File1" -v File2="$File2" -v key="$key" -v col="$col" -F "|" '
NR==FNR  { PE[$key] = $col ;next } 
{
        if ( $key in PE && $col!="1")
        { if (PE[$key]!=$col ) 
                { print $key"|"$col"|"PE[$key] }
                } 
        else  {
        print "key: "$key " is missing in " File2
        }
}' $File2 $File1

 

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LEARN ABOUT OPENDARWIN

ucblinks

ucblinks(1B)					     SunOS/BSD Compatibility Package Commands					      ucblinks(1B)

NAME
       ucblinks - adds /dev entries to give SunOS 4.x compatible names to SunOS 5.x devices

SYNOPSIS
       /usr/ucb/ucblinks [-e rulebase] [-r rootdir]

DESCRIPTION
       ucblinks  creates symbolic links under the /dev directory for devices whose SunOS 5.x names differ from their SunOS 4.x names. Where possi-
       ble, these symbolic links point to the device's SunOS 5.x name rather than to the actual /devices entry.

       ucblinks does not remove unneeded compatibility links; these must be removed by hand.

       ucblinks should be called each time the system is reconfiguration-booted, after any new SunOS 5.x links that are needed have been  created,
       since the reconfiguration may have resulted in more compatibility names being needed.

       In  releases prior to SunOS 5.4, ucblinks used a  nawk rule-base to construct the SunOS 4.x compatible names. ucblinks no longer uses  nawk
       for the default operation, although  nawk rule-bases can still be specifed with the -e option.  The  nawk rule-base equivalent to the SunOS
       5.4 default operation can be found in /usr/ucblib/ucblinks.awk.

OPTIONS
       -e rulebase     Specify rulebase as the file containing nawk(1) pattern-action statements.

       -r rootdir      Specify rootdir as the directory under which dev and devices will be found, rather than the standard root directory /.

FILES
       /usr/ucblib/ucblinks.awk        sample rule-base for compatibility links

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       devlinks(1M), disks(1M), ports(1M), tapes(1M), attributes(5)

SunOS 5.10							    13 Apr 1994 						      ucblinks(1B)
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