arvis-lock 
Arvis workflow to lock your Mac
The built-in "Lock" command is buggy for me.
🔗 This workflow is converted from alfred-workflow.
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Note that there might be some code change or different actions from the original workflow.
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Marked original workflow's creator to author.
Install
$ npm install --global arvis-mac-lock
Usage
In arvis, type lock, and then press Enter.