launchd plist for saned

org.macports.sane-backends.plist

<?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" >
<!--
Ref: https://trac.macports.org/attachment/ticket/27791/Portfile.diff
-->
<plist version='1.0'>
  <dict>
    <key>Label</key>
    <string>org.macports.sane-backends</string>
    <key>OnDemand</key>
    <true />
    <key>Disabled</key>
    <true />
    <key>ProgramArguments</key>
    <array>
      <string>/opt/local/sbin/saned</string>
    </array>
    <key>Sockets</key>
    <dict>
      <key>Listeners</key>
      <dict>
        <key>SockServiceName</key>
        <string>sane-port</string>
        <key>SockType</key>
        <string>stream</string>
      </dict>
    </dict>
    <key>inetdCompatibility</key>
    <dict>
      <key>Wait</key>
      <false />
    </dict>
    
    <!--
    <key>KeepAlive</key>
    <false />
    <key>RunAtLoad</key>
    <false />
    -->
  </dict>
</plist>

こちらを参照
http://d.hatena.ne.jp/aont/20120622/1340388965