Very Computer

Quote:> Hi all,
>     part of one of my scripts (AIX 4.1.5) has a structure like this:

> #!/bin/ksh
> dog=123
> cat=456

>         for item in dog cat
>         do
>            echo "The value of $item is ${${item}}"
>         done

> I want the output to look like:
>   The value of dog is 123
>   The value of cat is 456

> but I get back:
>   adam[7]: "The value of $item is ${${item}}": 0403-011 The specified
> substitution is not valid for this command.

> I know the "${${item}}" is wrong, but I can't find a way to tell it I
> want to get the value of item, which is dog, then the value of dog, which
> is 123.  I've tried many,many combinations, but nothing has worked.

I don't know if this works for ksh (don't have that on my system -- yet),
but I think bash is similar enough:

bash$ FOO=PATH
bash$ eval echo $`echo $FOO`
/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin

-Lars

--

A *real* smart bomb would call in sick, perhaps move to another country,
changing its name in the process, open a beach bar maybe and live out its
days in safe anonymity.                          -- Barry O'Neill in rhod

|> Hi all,
|>     part of one of my scripts (AIX 4.1.5) has a structure like this:
|>
|> #!/bin/ksh
|> dog=123
|> cat=456
|>
|>         for item in dog cat
|>         do
|>            echo "The value of $item is ${${item}}"
|>         done
|>
|> I want the output to look like:
|>   The value of dog is 123
|>   The value of cat is 456

With the thought that this might be a good place for an
associative array instead....

To do what you ask you can:

#!/bin/ksh
dog=123
cat=456
for item in dog cat
    do
    eval print "The value of $item is" '$'${item}
    done

--
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