Re: [bug-gawk] I have a problem with gawk and "for in do done" loop

[arnold]

Hello.

Nguyen Ngoc Anh <address@hidden> wrote:

> I am new to using gawk in my job. I want to use "for in do done" loop and i
> have the following scripts:
>
> for fn in a b d e f
> do
>  echo $fn
> done
>
> this code is not working ( I am using Windows 7), and I really want use it
> in my job. Can you help me ?
> Thanhs,

This syntax is for shell scripts, not awk scripts.  In awk, you first
set up an array:

        a["one"] = 1
        a["two"] = 2
        a[3] = "three"
        ...

Then you can loop over every element in the array as follows:

        for (i in a)
                printf("a[%s] = %s\n", i, a[i])

I suggest that you read the gawk documentation, which is available online
at http://www.gnu.org/software/gawk/manual/

Arnold