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erkanzileli/find_free_port.sh

Created February 20, 2021 20:46
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find_free_port.sh
#!/bin/bash
IP=$1
PORT_START=$2
PORT_END=$3
for i in $(seq "$PORT_START" "$PORT_END"); do
nc -z "$IP" "$i" 2> /dev/null
exit_code=$?
if [ $exit_code -eq 1 ]; then
echo -n "$i"
break
fi
done
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