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thanks people for helping me understand the subtleties. I think for the sake of clarity, I'm just going to use something like:


if [[ -f "$file" ]] ; then
(( counter++ ))
continue
fi

thank you everyone. i got it now. i was confused about the return behavior of (( counter++ )). so, to get what i was expecting, i can use either:

(( ++counter ))
(( counter = counter + 1 ))...

I've been troubleshooting a ksh93 script I wrote today and have narrowed it down to the root cause. but I don't understand why?

so, i've written the following script to demonstrate the problem i...