macOS Run a terminal command on startup and in background

[SkillsToShow]

I have this command that I run in the terminal that I want to run in the background and startup automatically when I turn my computer on. I have done a few google searches and it seems to be extremely complicated. What would be the best way to do this?

Here is the command I run in terminal:

cd '' && '/usr/local/bin/pythonw' '/Applications/Python 2.6/pyWHATauto-v1.14/Whatauto.py'

 

[calderone]

On startup or login?

For startup, you want to create a LaunchDaemon.

For login, create a LaunchAgent, For a user specific launch agent, put it in the ~/Library/LaunchAgents. For a system wide launch agent drop it in /Library/LaunchAgents.

Creating things for launchd is covered here: http://www.afp548.com/article.php?story=20050620071558293

 

[SkillsToShow]

I actually want it to start up when I login. I googled Launch Agent and found this code:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>Label</key>
	<string>com.apple.TextEdit</string>
	<key>OnDemand</key>
	<false/>
	<key>ProgramArguments</key>
	<array>
		<string>/Applications/TextEdit.app/Contents/MacOS/TextEdit</string>
	</array>
</dict>
</plist>

Is this something I can use to startup on login? and run in the background? I have no programming knowledge so this kind of stuff is pretty new to me.