Scan the local network and check in whoever is there

You'll need

• a machine connected to the local office network to run this
• to configure a Slack incoming webhook
• some sort of people check in system in place

Server requirements:

• nmap
• jq

Setup by copying and modifying

• env.sh.example -> env.sh
• users.list.example -> users.list

Put in your crontab

*/5 * * * * cd /path/to/directory; ./scan-office.sh
0   3 * * * rm -f /path/to/directory/pinged.out

Enjoy!