Re: this should be easy variable expansion including globs.

[Daniel Shahaf <d.s@xxxxxxxxxxxxxxxxxx>]

Nikolay Aleksandrovich Pavlov (ZyX) wrote on Wed, Jan 18, 2017 at 23:12:34 +0300:
> Alternative solutions are […] using zsh/parameter module, there will
> be $parameters associative array which may be searched by indexing
> (find `Subscript Flags` section in man pages, though I failed to
> construct a useful subscript) and definitely can be processed in
> a cycle.

% typeset -p ${(k)parameters[(I)SMART*]} >! somefile

1. $parameters is an associative array mapping parameter names to
I don't know what.

2. (I)SMART* causes the parameter expansion to match all key-value pairs
where the key matches "SMART*".

3. (k) means: for each matched pair, the expansion shall contain the
key.

Bug: when there are no variables named SMART*, this will run «typeset
-p» which will output all variables.  You could guard against that with
.
    local -a names=( ${(k)…} )
    (( $#names )) || return 1

-------

Now, having said all that: the Internet says that the smartd(8) man page
documents the available parameters.  That isn't the case on my box, but
my smartd(8) might be out of date.

Cheers,

Daniel