# “Program Output” items

The "Program Output" backup type backs up the `stdout` (Standard Output) stream of any command execution. This stream data is saved as a virtual file within the backup job. You can choose the virtual file name.

The data is streamed directly to the backup destination and never touches the local disk. This has the consequence that no progress bar or ETA can be calculated or displayed during backup jobs.

If the target application produces any content on `stderr` (Standard Error), it will be logged in the backup job report, and the final job status will show a "Warning".

If the target application exits with a non-zero error code, the error code will be logged in the backup job report, and the final job status will show an "Error".

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