#! /usr/bin/env sh

# Copyright (C) 2012,2022 by Erik Auerswald <auerswal@unix-ag.uni-kl.de>
#
# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved.  This file is offered as-is,
# without any warranty.

# Wrapper for ping from "iputils" to report reachability only.
# Intended for use with "ping_scan" script on GNU/Linux and similar systems.
# Synopsis: ping_wrapper [-n] host [timeout]
# Version 2012-07-21-01
OPTS='-c1'
test "$1x" = "-nx" && { OPTS="$OPTS -n"; shift; }
TIMEOUT=${2:-20}
# shellcheck disable=SC2086
ping $OPTS -W"$TIMEOUT" "$1" > /dev/null 2>&1 &&
  printf -- '%s is alive\n' "$1" ||
  echo "no answer from $1"