Linux script detects whether the network is unblocked with the specified IP segment

The Linux script detects that the local link specifies whether the IP segment is unblocked, detects the specified IP through the ping command, detects the command execution result, and if 0 is unblocked, if 1 indicates that the network is unblocked, except that the specified machine disables the ping command. The code is as follows:

#!/bin/bash

#

For N in ' seq 121 237 '

Do

Ping-c1 192.168.10. $N &>/dev/null

If [$?-eq 0]

Then

echo "192.168.10. $N is up." >>/mnt/up_list.log

Else

echo "192.168.10. $N is down." >>/mnt/down_list.log

Fi

Done

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Linux script detects whether the network is unblocked with the specified IP segment