Check live assets via a ping scan. Tested on Kali Linux.

check_live_assets_via_ping.sh

#!/bin/bash
if [ $# -lt 2 ]; then
    echo "[-] $0 <assets-list> <out-active-assets-list>"
    exit
fi
assets_list="$1"
out_active_assets_list="$2"

for asset in `cat "$assets_list"`; do
    echo "[*] Testing asset '$asset'"
    ping -c1 -w2 "$asset" \
        | grep "64 bytes" \
        | cut -d" " -f4 \
        | tee -a "$out_active_assets_list"
done