Standard Output (stdout) - CI/CD Glossary Definition

Standard output (stdout, file descriptor 1) is the default stream a process writes normal output to. It is buffered and can be redirected to a file or piped to another command.

In CI

GitHub Actions captures stdout (and stderr) into the step log. Writing to the special file in $GITHUB_OUTPUT (not stdout) is how steps pass values to later steps.

Related guides

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