shell脚本ping网段代码

一、

#!/bin/bash

for i in $(seq 1 254)

        do

        {

        IP="192.168.191.$i"

        ping $IP -c1 -s1 2>&1 1>/dev/null && echo -e $IP is "alive" || echo -e $IP is "down"

        } &

        done

wait
   

二、

 #!/bin/bsh

prefix=192.168.1

octet=1

while [ "$octet" -lt "255" ]; do

        echo -en "Pinging ${prefix}.${octet}..."

        ping -c1 -w1 ${prefix}.${octet} >/dev/null 2>&1

        if [ "$?" -eq "0" ]; then

                echo " ok"

        else

                echo " failed"

        fi

        let octet=$octet+1

done