System Grab Bag

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faketime

Fake the system time for a given command. More information: https://manned.org/faketime.
  • Fake the time to this evening, before printing the result of date:
    faketime '{{today 23:30}}' {{date}}
  • Open a new bash shell, which uses yesterday as the current date:
    faketime '{{yesterday}}' {{bash}}
  • Simulate how a program would act next Friday night:
    faketime '{{next Friday 1 am}}' {{path/to/program}}

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