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#!/bin/sh
cmd="$1"
shift 1
findpos() {
while :; do
[ "$#" -lt 2 ] && { echo "no -o option found" >&2; return 1; }
[ "x$1" = "x-o" ] && { echo "$#"; return 0; }
shift 1;
done
}
# cmd x x x -o y z z z
nx=$(findpos "$@")
[ -z "$nx" ] && exit 1
n_before=$(expr "$#" - "$nx")
n_after=$(expr "$nx" - 2)
outfile=$(shift $n_before; printf '%s:' "$2")
outfile="${outfile%?}"
while :; do
if [ "$n_before" -gt 0 ]
then
set -- "$@" "$1";
shift 1;
n_before=$(expr "$n_before" - 1);
elif [ "$n_before" -eq 0 ]
then
shift 2;
n_before="-1";
elif [ "$n_after" -gt 0 ]
then
set -- "$@" "$1"
shift 1
n_after=$(expr "$n_after" - 1)
else
exec "$cmd" "$@" "$outfile"
exit 127
fi
done
echo "something went badly wrong" >&2; exit 1;
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