Shell Programming and Scripting

1 a 4
2 b 5
3 c 6

     4 5 6
1 a
2       b
3            c

$ nawk '{a[i++]=$NF;for(j=i;j>=0;j--)c=c" ";data=data"\n"$1c$2;next}END{for(b=0;b<i;b++){printf "  "a[b]" "}print data}' input.txt
  4   5   6 
1  a
2     b
3         c

Hi itkamaraj,

Thanks as it worked. 

Can you please explain me how it is working so that i can also try some other possible things.

I am looking for some report purpose.

Hi

 I am looking someone to help me out as how the above command will work. Thanks in Advance.

awk ' {
        a[i++]=$NF;                     # Set array: a incremented by index i value to last field of current record. [ Stores values 4 5 6 ]
        for(j=i;j>=0;j--)               # For loop to define variable: c with blank spaces
                c=c" ";
        data=data"\n"$1c$2;             # Set data = data which is intially null -- newline -- first field -- blank spaces in c -- second field
        next;                           # Skip processing current record.
} END {
        for(b=0;b<i;b++) {
                printf "  "a[b]" "      # Print blank spaces -- array a [ print values 4 5 6 ]
        }
        print data                      # Print variable data
}' input.txt