How to mark an array in POSIX sh?

Question

While replacing external commands in a shell script, I used an array to get rid of awk\'s NF.

Now, since I moved from bash to POSIX sh, I cannot get the

Answer 1

Arrays are not part of the POSIX sh specification.

There are various other ways to find the last item. A couple of possibilities:

#!/bin/sh
export RANGE="0 1 4 6 8 16 24 46 53"
for LAST_ITEM in $RANGE; do true; done
echo "Last element(replace NF): $LAST_ITEM"

or:

#!/bin/sh
export RANGE="0 1 4 6 8 16 24 46 53"
LAST_ITEM="${RANGE##* }"
echo "Last element(replace NF): $LAST_ITEM"