Installation
$ [sudo] pip install launchd-add-logs
$ [sudo] npm i -g launchd-add-logs
How it works
~/Library/Logs/LaunchAgents/<Label>/out.log
~/Library/Logs/LaunchAgents/<Label>/err.log
<name>.plist
<key>StandardErrorPath</key>
<string>/Users/<username>/Library/Logs/LaunchAgents/<Label>/err.log</string>
<key>StandardOutPath</key>
<string>/Users/<username>/Library/Logs/LaunchAgents/<Label>/out.log</string>
Examples
$ find ~/Library/LaunchAgents -name "*.plist" -print0 | xargs -0 launchd-add-logs