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zfogg/tcp_checker.sh

Created October 16, 2020 20:10
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network testing on any UNIX system without calling any binaries
Raw
tcp_checker.sh
#!/usr/bin/env sh
address=${1:-localhost}
port=${2:-53}
proto=${3:-tcp}
(echo > "/dev/$proto/$address/$port") >/dev/null 2>&1 \
&& echo "✅ $address:$port is ONline ✅" \
|| echo "⛔ $address:$port is OFFline ⛔"
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