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A comment on MIT Study Finds AI Use Reprograms the Brain, Leading to Cognitive Decline. Parent comment

Re:MIT Study Finds AI Use Reprograms the Brain, Leading to C... by mzajc on Wednesday September 03, 2025 @02:13PM (#45118831)
Yup, it's undocumented for some reason. I don't remember where I saw it used, but as an example

  [Service]
  ExecStart=/bin/echo $PATH
Will log the environment variable, while

  [Service]
  ExecStart=:/bin/echo $PATH
Will log literal $PATH.
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