Your code should work, except that you need to replace:
%cmd_table{$test}
by
$cmd_table{$test}
You are refering to the value of a hash entry, not the hash itself, that's why you need $.
Oh, and there is no need for the @testarray (at least not in this snippet): just loop over the keys of %cmd_table, as in:
foreach $test (keys %cmd_hash) {
# do your thing
}
Hope this helps.
CU Robartes-
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