README.md

Put in ~/Library/LaunchAgents.

launchctl load drew.screenshot.plist

drew.screenshot.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>drew.screenshot</string>
        <key>ProgramArguments</key>
        <array>
            <string>/usr/bin/open</string>
            <string>-a</string>
            <string>screenshot</string>
        </array>
        <key>Nice</key>
        <integer>1</integer>
        <key>StartInterval</key>
        <integer>1200</integer>
        <key>StandardErrorPath</key>
        <string>/Users/drew/launchd.err.txt</string>
        <key>StandardOutPath</key>
        <string>/Users/drew/launchd.txt</string>
    </dict>
    </plist>