the simplest in awk... 1

[w5000]

what I have now:

$ cat f1
abc:3424
addf:4523
fsfs:2354
$ cat f2
abc:3535
fsfs:2354
$ awk -F\: '{print $1}' f1 f2|sort -u|while read a;do echo "$a :: `awk -F\: -vb=$a '$1 == b {print $2}' f1` : `awk -F\: -vc=$a '$1 == c {print $2}' f2`";done
[red]abc :: 3424 : 3535
addf :: 4523 :
fsfs :: 2354 : 2354[/red]
$

and what I would like to have on output:

[red]abc :: 3424 : 3535
addf :: 4523 : -
fsfs :: identical : identical[/red]

 

[PHV]

Something like this ?

 awk -F':' '
NR==FNR{a[$1]=$2;next}
{if($1 in a)if(a[$1]==$2)x=y="identical";else {x=$2;y=a[$1]}else{x=$2;y="-"}
 printf "%s :: %s : %s\n",$1,x,y}
' f2 f1

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[PHV]

Even simpler:
awk -F':' 'NR==FNR{a[$1]=$2;next}{x=$2;if($1 in a)if(a[$1]==$2)x=y="identical";else y=a[$1];else y="-";printf "%s :: %s : %s\n",$1,x,y}' f2 f1

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886