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recur is a command-line tool that runs a single command repeatedly until it succeeds or no more attempts are left. It implements optional exponential backoff with configurable jitter. It lets you write the success condition in Starlark.
The "duration" arguments take Go duration strings; for example, 0, 100ms, 2.5s, 0.5m, or 1h. The value of -j/--jitter must be either one duration string or two joined with a comma, like 1s,2s.
Setting the delay (-d/--delay) increases the maximum delay (-m/--max-delay) to that value when the maximum delay is shorter. Use -m/--max-delay after -d/--delay if you want a shorter maximum delay.
recur exits with the last command's exit code unless the user overrides this in the condition. When the command is not found during the last attempt, recur exits with the code 255.
recur supports a limited form of scripting. You can define the success condition using an expression in Starlark, a small scripting language derived from Python. The default condition is code == 0. It means recur will stop retrying when the exit code of the command is zero.
