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Hmmm - I missed to post the necessary IFS modification. Try again with this slightly modified version:
IFS=$'\n'

for IN in $(echo "${!ENTRIES
}" | tr ',' '\n' | sort -un)
do [ !...

It does, as you can see in my post.
- What's your result with the array shown in post #1?
- What exactly does your array look like (index / element)?
- What's yoour bash version?
Run the code...

man hosts:



Guessing ENTRIES is your array, how far would this get you:
for IN in $(sort -u <<< $(echo "${!ENTRIES
}" | tr ',' '\n'))
do [ ! "${IN/[A-Z]}" = "$IN" ] && break
...

What bug? pls describe / explain.


Array used for what?


The element count per leading number seems to vary?


The hosts file doesn't come from the array above?



What...