ProgramArguments mutiple commands launchd
<?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>some.label</string>
<key>ProgramArguments</key>
<array>
<string>bash</string>
<string>-c</string>
<string>python first_script.py;python second_script.py</string>
</array>
<key>RunAtLoad</key>
<true/>
</dict>
</plist>