tldr/pages/common/chronic.md

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# chronic
> Display `stdout` and `stderr` of a command if and only if it fails.
> More information: <https://joeyh.name/code/moreutils/>.
- Display `stdout` and `stderr` of the specified command if and only if it produces a non-zero exit code or crashes:
`chronic {{command options ...}}`
- Display `stdout` and `stderr` of the specified command if and only if it produces a non-empty `stderr`:
`chronic -e {{command options ...}}`
- Enable [v]erbose mode:
`chronic -v {{command options ...}}`