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    tee would block until : reads the data, which never happens, and when : exits it will receive a PIPE signal and terminate from it. The user should use cat >/dev/null in place of :. Commented Oct 8, 2022 at 9:30
  • Yeah, just switching the $log_filepath to /dev/null may be easiest. Commented Oct 8, 2022 at 9:55