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#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
forever [-n SECONDS] [-q] COMMAND...
EOF
}
_SECONDS=5
QUIET=false
while getopts 'n:q' flag; do
case "$flag" in
(n)
_SECONDS="$OPTARG"
;;
(q)
QUIET=true
;;
(*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
eval "$(assert-arg -- "${1:-}" 'COMMAND')"
while true; do
STATUS=0
"$@" || STATUS=$?
if [ "$QUIET" = false ]; then
printf 'Exitted with code %s.\n' "$STATUS" >&2
fi
sleep "$_SECONDS"
done
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