LaunchDaemons to mine ethereum

com.github.ethminer.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">
<plist version="1.0">
  <dict>
    <key>Label</key>
    <string>com.github.ethminer</string>
    <key>RunAtLoad</key>
    <true/>
    <key>KeepAlive</key>
    <true/>
    <key>ThrottleInterval</key>
    <integer>300</integer>
    <key>ProgramArguments</key>
    <array>
        <string>/Users/ben/.scripts/ethminer</string>
        <string>-G</string>
        <string>-U</string>
        <string>-S</string>
        <string>us1.ethermine.org:4444</string>
        <string>-O</string>
      <!-- substitute the following string for your own ethereum wallet address -->
        <string>94aeb83f43d0123319c46a11fc708497aa14d87b.hackncheese</string>
    </array>

    <key>WorkingDirectory</key>
    <string>/Users/ben</string>

    <key>StandardOutPath</key>
    <string>/tmp/ethminer.log</string>
    <key>StandardErrorPath</key>
    <string>/tmp/ethminer-error.log</string>

    <key>UserName</key>
    <string>ben</string>
    <key>GroupName</key>
    <string>staff</string>

  </dict>
</plist>

homebrew.mxcl.ethereum.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">
<plist version="1.0">
  <dict>
    <key>Label</key>
    <string>homebrew.mxcl.ethereum</string>
    <key>RunAtLoad</key>
    <true/>
    <key>KeepAlive</key>
    <true/>
    <key>ThrottleInterval</key>
    <integer>300</integer>
    <key>ProgramArguments</key>
    <array>
        <string>/usr/local/bin/geth</string>
        <string>--rpc</string>
        <string>--rpccorsdomain=localhost</string>
    </array>
    <key>WorkingDirectory</key>
    <string>/Users/ben</string>

    <key>StandardOutPath</key>
    <string>/tmp/geth.log</string>
    <key>StandardErrorPath</key>
    <string>/tmp/geth-error.log</string>

    <key>UserName</key>
    <string>ben</string>
    <key>GroupName</key>
    <string>staff</string>

  </dict>
</plist>

Copy the following files into /Library/LaunchDaemons to launch geth and ethminer on system start. The daemons will run under your local user account. Adjust the paths and usernames to match your setup.