Since they won’t give me a static IP address here I made this little MacOS Launch Agent to copy my current IP address to my Dropbox folder so I can make sure to access it from anywhere. This version runs at boot-up and once per day.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>local.ipaddress</string>
<key>ProgramArguments</key>
<array>
<string>/usr/sbin/ipconfig</string>
<string>getifaddr</string>
<string>en0</string>
</array>
<key>StandardOutPath</key>
<string>/DROPBOXDIRECTORY/ipaddress</string>
<key>StartInterval</key>
<integer>86400</integer>
<key>RunAtLoad</key>
<true/>
</dict>
</plist>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>local.ipaddress</string>
<key>ProgramArguments</key>
<array>
<string>/usr/sbin/ipconfig</string>
<string>getifaddr</string>
<string>en0</string>
</array>
<key>StandardOutPath</key>
<string>/DROPBOXDIRECTORY/ipaddress</string>
<key>StartInterval</key>
<integer>86400</integer>
<key>RunAtLoad</key>
<true/>
</dict>
</plist>
Save it to
~/Library/LaunchAgents/local.ipaddress
and make it executable (required?) by doing
chmod +x ~/Library/LaunchAgents/local.ipaddress
Then activate it:
launchctl load ~/Library/LaunchAgents/local.ipaddress
launchctl start ~/Library/LaunchAgents/local.ipaddress
launchctl start ~/Library/LaunchAgents/local.ipaddress
If you want to give it root privileges you can make it run every time the DCHP lease changes by adding:
<key>UserName</key>
<string>root</string>
<key>WatchPaths</key>
<array>
<string>/private/var/db/dhcpclient/leases/</string>
</array>
<string>root</string>
<key>WatchPaths</key>
<array>
<string>/private/var/db/dhcpclient/leases/</string>
</array>
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