Follow the configuration tutorial and make a basic configuration file as a starting point. You'll need it before setting up the daemon to run at startup.
There are two options for launching FlexGet as a daemon at startup. You can use the macOS launcher package, or setup a launch agent.
Please note that the launcher package was not created, and is not maintained, by Flexget. Questions or issues regarding the app bundle should be directed to the issues page.
The launcher package simply reads your ~/.bash_profile file and starts the FlexGet daemon.
Create /Users/USERNAME/Library/LaunchAgents/com.flexget.plist with:
<?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.flexget</string>
<key>ProgramArguments</key>
<array>
<string>/usr/local/bin/flexget</string>
<string>--cron</string>
<string>execute</string>
</array>
<key>Nice</key>
<integer>1</integer>
<key>StartInterval</key>
<integer>900</integer>
<key>RunAtLoad</key>
<true/>
</dict>
</plist>
Note: On some systems, FlexGet installs itself into /bin/flexget instead of /usr/local/bin/flexget; type which flexget to find out where the FlexGet binary is located and modify com.flexget.plist accordingly.
Then:
launchctl load -w /Users/USERNAME/Library/LaunchAgents/com.flexget.plist
When upgrading, use this to unload the plist:
launchctl unload /Users/USERNAME/Library/LaunchAgents/com.flexget.plist
If you want to check if Flexget is running, use
launchctl list | grep flexget
If the process is running, you'll see a process ID in the first column, followed by the last exit status. If the second column isn't 0, check your log file for errors.
Check the launchd man page for other options.