Shell script to realize IP address in Fast ping Network Segment

Sometimes if you want to see which IP is used in the network segment, you can use this fast ping to make a preliminary judgment. You can specify your own test IP segment and sort the test results into files.

#! / bin/bash

# V1.0 2019-09-10

# Ping test shell script by tutor

Clear

> ip-up.txt

> ip-down.txt

While true

Do

Read-p "Please input the ip segment for ping test (like 192.168.100):" segment

If [- z $segment]; then

Segment= "192.168.100"

Fi

Echo-n "the ip segment is ${segment}, are you sure to continue [yzone]?"

Read action

If [- z $action]; then

Break

Fi

If ["$action" = "y"]; then

Break

Fi

Done

Echo "ping test is ready to run!"

For i in {1..254}

Do

{

Ping-c2-W1 ${segment}. ${I} & > / dev/null

If [$?-eq 0]; then

Echo "${segment}. $i is up" & > / dev/null > > ip-up.txt

Else

Echo "${segment}. $i is down" & > / dev/null > > ip-down.txt

Fi

} &

Done

Wait

Sort-n-k 4-t. Ip-up.txt-o ip-up.txt

Cat ip-up.txt

Sort-n-k 4-t. Ip-down.txt-o ip-down.txt

Cat ip-down.txt

Echo "ping test are finished!"