Run a command every n seconds.

1. Ensure you have Cargo and Rust installed.
2. Install with the following command:

cargo install every

To run echo hello world every second, use:

every 1s echo hello world

If the command takes longer than the specified interval (1s in this case), some ticks will be skipped because the concurrency is set to 1 by default.

To allow multiple instances of the command to run in parallel, and reduce skipped ticks, use the -c option:

every 1s -c 10 curl https://some-slow-api.com/

With this setting, up to 10 commands can run in parallel. The command will execute every second without skipped ticks, as long as the number of parallel executions doesn’t exceed the concurrency limit.

The interval format is a number followed by a unit. The unit can be one of the following:

• s for seconds
• m for minutes
• h for hours
• d for days

Seconds can have a decimal part: 2.5s.
Units can be combined: 1h30m.