Entry 3231

bash2map

Submitted by jms on Feb. 19, 2010 at 10:39 p.m.
Language: Bash. Code size: 343 bytes.

if [ -z $1 ]; then
	echo "Usage: [ip|hostname]"
	exit 1
fi

echo -e "bash2map.sh 1.0\n"
echo -e "Port\t\tState\t\tService"

(for ((p=0; p < 1024; p++)); do 
 echo "0" >/dev/tcp/$1/$p \
 && service=$( awk -v p=$p '{if ($2 ~p) print $1 }'</etc/services | head -n1 ) \
 && echo -e "$p/tcp\t\topen\t\t$service" >&1;
done) 2>/dev/null

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