gistfile1.txt

<plist version="1.0">
  <dict>
    <key>Label</key>
      <string>Localhost2</string>
    <key>ProgramArguments</key>
      <array>
        <string>/sbin/ifconfig</string>
        <string>lo0</string>
        <string>alias</string>
        <string>127.0.0.2</string>
        <string>netmask</string>
        <string>255.255.255.0</string>
      </array>
    <key>RunAtLoad</key>
      <true/>
  </dict>
</plist>