PRMan has the ability to resume interrupted renders. How this works depends on the mode that it's running in. Non-incremental renders to TIFF and OpenEXR images can always be recovered. Incremental renders to OpenEXR images can also be recovered, but only if the checkpointing option was used.

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Therefore, to exit a render after 5 minutes, enter 5m

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1min

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2min

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5mins

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