How to use shell to detect IP usage of Network Segment
Editor to share with you how to use shell to detect the use of IP in network segments. I hope you will get something after reading this article. Let's discuss it together.
The code is as follows:
#! / bin/bash
# main
Network=192.168.1
Ping_count=3
IP=1
: > IP_use
: > IP_idle
: > ping_action
Echo "`date" +% Y%m%d% H:%M:%S "`- > script starts execution."
While [$IP-lt 255]
Do
Host=$network.$IP
Echo "- > starts to check whether the communication of $host server is normal, and the number of ping times is $ping_count."
Ping $host-c $ping_count > .ping_tmp
Sleep 1
Cat .ping _ tmp > > ping_action
Echo "- > Server $host detection completed."
Sum_ping= `tail-2.ping _ tmp | head-1 | awk-F,'{print$2}'| cut-c 2-2`
Loss_ping= `tail-2.ping _ tmp | head-1 | awk-F,'{print$4}'| cut-c 2-5`
If [$sum_ping-eq $ping_count]; then
Echo "--> $host IP is already in use"
Echo "--> $host IP is already in use" > > IP_use
Else
Echo "$host IP is currently free: $loss_ping"
Echo "$host IP is currently free" > > IP_idle
Fi
IP=$ ((IP+1))
Done
The echo "`date" +% Y%m%d% H:%M:%S "`- > script has finished running."
To implement all the IP of a network segment of Ping and check whether the network connection status is normal, there are many methods that can be implemented. Here are two methods, as follows:
Script 1
The code is as follows:
#! / bin/sh
# all IP of Ping IP address range
# 2012-02-05
Ip=1 # by modifying the initial value
While [$ip! = "254]; do
# yes is normal, no host does not exist or is not normal
Ping 192.168.0.$ip-c 2 | grep-Q "ttl=" & & echo "192.168.0.$ip yes" | | echo "192.168.0.$ip no"
Ip= `expr "$ip"+"1" `
Done
Output result:
192.168.0.1 yes
192.168.0.2 no
192.168.0.3 no
192.168.0.4 no
192.168.0.5 yes
192.168.0.6 no
192.168.0.7 yes
...
Script 2
The code is as follows:
#! / bin/sh
# all IP of Ping IP address range
# 2012-02-05
Ip= "192.168.0."
For i in `seq 1 254`
Do
Ping-c 2$ ip$i | grep-Q 'ttl=' & & echo "$ip$i yes" | | echo "$ip$i no"
# yes is normal, no host does not exist or is not normal
Done
Output result:
192.168.0.1 yes
192.168.0.2 no
192.168.0.3 no
192.168.0.4 no
192.168.0.5 yes
192.168.0.6 no
192.168.0.7 yes
...
After reading this article, I believe you have a certain understanding of "how to use shell to detect the use of IP in network segments". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!
