Re: fi

"Ed Morton" <morton@[EMAIL PROTECTED]
> wrote in message
news:4790DBE5.2030904@[EMAIL PROTECTED]
> awk 'NR==FNR{file1[$2]=$0; next} {file2[$2]=$0}
> END {
>    print "File1"
>    for (key in file1)
>       if (!(key in file2))
>          print file1[key]
>
>    print "File2"
>    for (key in file2)
>       if (!(key in file1))
>          print file2[key]
> }' file1 file2

It is not stated by the OP but there seems to be a tacit assumption that
$2
is unique in each file, else further occurances will overwrite each other.

Assuming they ARE unique:

NR == FNR { file1[$2] = $0; next } # I stole this :)

$2 in file1 { delete(file1[$2]); next }

{ file2[$2] = $0 }

END {
    print "File 1"
    for ( i in file1 )
        print file1[i]
    print "File 2"
    for ( i in file2 )
        print file2[i]
}

- Anton Treuenfels