Explore local network IP and output it on slack (PC name / IP / Vendor)

discover_ip_slack.sh

# Should be run as root
Ips=$( nmap -sP 192.168.*.* | sed '/Host is up/d' | sed 's/.localdomain//' | sed 's/Nmap scan report for *//' | sed '/Nmap done/d' | sed 's/MAC Address: ..:..:..:..:..:.. //' | tr \(\) \* | paste -d ' ' - - | sed '/Starting Nmap/d' )

# Check the diff between current run and previous (should be run in a cron every hour or something)
echo $Ips > current
if ! cmp current old >/dev/null 2>&1; then
    curl -X POST -H 'Content-type: application/json' --data '{"text": "---------------------\n\n\n'"${Ips}"'" }' https://hooks.slack.com/services/<INSERT_ACTUAL_SLACK_URL_HERE>
    mv current old
fi