Created
November 5, 2017 05:23
-
-
Save ashutoshsmaurya/aeca495723e91228e187d52657d41a1d to your computer and use it in GitHub Desktop.
Monitoring DHCP usage
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/bin/bash | |
rm /tmp/showdhcp.log & | |
rm /tmp/tmp* & | |
tempFile=$(mktemp) | |
cat /var/lib/dhcpd/dhcpd.leases \ | |
| grep \ | |
-e '^lease ' \ | |
-e '^ binding state' \ | |
-e hardware \ | |
-e client-hostname \ | |
-e } >$tempFile.1 | |
sed -e "s/^lease \(.*\) {$/\1~/" \ | |
-e "s/^ binding state \(.*\);$/\1~/" \ | |
-e "s/^ hardware ethernet \(.*\);$/\1~/" \ | |
-e "s/ client-hostname \(.*\);$/\1~/" \ | |
-e "s/^}//" \ | |
$tempFile.1 > $tempFile.2 | |
sed -e ":'loop';/~$/N;s/~\n/,/;t'loop'" \ | |
-e "s/,$//" \ | |
-e "s/,/\t/g" \ | |
$tempFile.2 | sort > $tempFile.3 | |
sed -e'$!N;/^\(.*\)\n\1$/!P;D' $tempFile.3 > $tempFile.4 | |
print=$(printf "IP Addr\t\tStatus\t\tMAC\t\tHost Name\n") | |
cat $tempFile.4 > /tmp/showdhcp.log & | |
sed -i "1i $print" /tmp/showdhcp.log | |
#rm -rvf /tmp/Non_Active_User* | |
#rm -rvf /tmp/Active_User* | |
#cp -rvf $tempFile.4 /tmp/showdhcp.log & | |
free=$(grep -o -w 'free' /tmp/showdhcp.log | wc -w) | |
active=$(grep -o -w 'active' /tmp/showdhcp.log | wc -w) | |
echo -e "" | |
echo -e "--------- Total Count- Active & Non Active -----------" | |
echo -e "" | |
echo -e "Total Active User :" $free | |
echo -e "Total Non Active User :" $active | |
echo -e "------------------------------------------------------" | |
#sed -n '/free/p' /tmp/showdhcp.log > /tmp/Non_Active_User_$(date +"%Y-%m-%d__%H%M%S").log | |
#sed -n '/active/p' /tmp/showdhcp.log > /tmp/Active_User_$(date +"%Y-%m-%d__%H%M%S").log | |
rm $tempFile.* | |
#rm -rvf /tmp/showdhcp.log | |
#rm -rvf /tmp/tmp* & |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment