tldr/pages/linux/faketime.md

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# faketime
> Fake the system time for a 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}}`