retry

The missing command line tool to execute the same command several times.

$ retry --max 4 curl --head --url https://www.google.com
      RealTime SystemTime   UserTime    Success      Error
  1  179.184ms   11.438ms   29.477ms       true
  2  170.156ms    9.122ms   28.621ms       true
  3   170.78ms    8.465ms   27.948ms       true
  4  166.297ms    8.264ms   24.533ms       true

Install

Use executable (recommended)

Download at releases

Homebrew (macOS)

To add the tap and install in one command:

brew install martinezdelariva/retry/retry

Compile on your own

1. Download or clone the repo.
2. Build executable make build

Executable is placed at bin/retry

Usage

$ retry [options] <command> [args...]

Options:

• --max 1: maximum number of command execution.
• --sleep 2s: sleep time between single execution.
• --timeout 15s: limits the time duration of total retries.
• --concurrency 1: maximum number of concurrent executions.

Type retry --help for a complete description and default values.

TODO

• Exponential back off between execution.
• Stop execution of first success.