I've always considered DD's one of the major differences between MVS and
other platforms. I remember one of my first BASIC programs in college
where we had to code something like "OPEN PAYROLL.DATA FOR INPUT AS #1"
and sort. The first thing I thought of was, "So we have to update the
program every time we want to sort a different file?"
DD redirection: Genius, whoever thought of it.
On 7/11/2018 8:40 AM, Steve Smith wrote:
DDNAMEs are a pretty nice feature of z/OS! So you *don't* have to pass a
bunch of (potentially very long) file names. DDNAMEs can be thought of as
a limited form of environment variables.
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