Shell Programming and Scripting

The nawk script will be a function within a ksh script, called mynawk.

I will be calling mynawk with one of 3 arguments, either:

mynawk insert
mynawk update
mynawk delete.

For either insert or update I need the new.column printed
For the delete I need the old.column printed.

So I was thinking that type="update" should be type="$1" ( $1 meaning the first argument to the nawk routine ).

Then, based on the value of type ( either delete, update or insert ), the printf statement will know what to do.

I hope that explains it well enough. You've been very helpful and patient with me.

Thanks !!

Floyd

Code:

printf("%c%s.%s%c%s", aT[i], (type=="update"||type="insert")?"new":"old", aN[i], aT[i],(i==FNR)?")" ORS:OFS)

That's cool, I see that now.
But still I have no way of calling it with either an insert or an update or delete.

Here is what I'm trying to do. All of your code works great if I edit that last line and change it from update to insert to delete.
I don't want to do that. The script is calling a function (awkfunction) with 2 arguments. arg1 is the filename and arg2 is the string "update" or "insert" or "delete". Then whenever I call the function it will know whether to use old or new.



awkfunction () {
nawk '
{
all your awk code goes here
.....
.....
}' q="'" OFS=, type='$2' $1

}##end of awk function.


##shell script line that calles the awkfunction.
awkfunction filen insert




Thanks,
floyd

Code:

awkfunction () {
nawk '
{
all your awk code goes here
.....
.....
}' q="'" OFS=, type="$2" "$1"

}##end of awk function.

Oh yea sorry.
I tried that before with the double quotes and it didn't work, but then we didn't change the argument line to awk.

Hey thanks for all your help. It looks good.