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Full Discussion: join files based on a common field
Top Forums Shell Programming and Scripting join files based on a common field Post 302524680 by Chirel on Tuesday 24th of May 2011 07:50:52 AM
Old 05-24-2011
Do you mean that you only wanna see line that have a first field match on the 3 files ?

---------- Post updated at 01:50 PM ---------- Previous update was at 01:41 PM ----------

If so here is an ugly solution that should do the job.
In my example the file names are file01, file02 and file03.
Code:
cat file?? | awk '{print $1}' | sort -u | while read i; do
   RF1="$(grep $i file01)"
   RF2="$(grep $i file02)"
   RF3="$(grep $i file03)"
   if [ -n "$RF1" -a -n "$RF2" -a -n "$RF3" ]; then
      echo "$RF1 $(echo $RF2 | awk '{print $4}') $(echo $RF3 | awk '{print $4}')"
   fi
done

 

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LEARN ABOUT HPUX

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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