# Run a program on this machine Control / exec A variant of [Run an external command](https://meridian.online/operations/run-an-external-command). Run an operating-system command or external program, once or per row, and capture its output and exit code. Page: ## Status Not built yet. arcform does not do this yet; it would live in how a Protocol runs. [Its place on the roadmap](https://meridian.online/roadmap#run-an-external-command) ## What other tools call it Meridian's classification; an independent blind rating agreed on 95.7% of 324 rows (variant, version 3). - Alteryx Designer: [`Run Command`](https://help.alteryx.com/current/en/designer/tools/developer/run-command-tool.html) (read 2026-09-27) - EasyMorph: [`Iterate program`](https://help.easymorph.com/doku.php?id=transformations:iterateprogram) (read 2026-09-27) - EasyMorph: [`Run program`](https://help.easymorph.com/doku.php?id=transformations:runprogram) (read 2026-09-27) - Apache Hop: [`Execute a process`](https://hop.apache.org/manual/latest/pipeline/transforms/execprocess.html) (read 2026-09-27) - KNIME Analytics Platform: [`KNIME External Tool Support (Labs) (extension)`](https://api.hub.knime.com/extensions/org.knime.features.exttool) (read 2026-09-27) - KNIME Analytics Platform: [`KNIME External Tool Support (extension)`](https://api.hub.knime.com/extensions/org.knime.features.ext.exttool) (read 2026-09-27) - Apache NiFi: [`ExecuteProcess`](https://nifi.apache.org/components/org.apache.nifi.processors.standard.ExecuteProcess/) (read 2026-09-27) - Apache NiFi: [`ExecuteStreamCommand`](https://nifi.apache.org/components/org.apache.nifi.processors.standard.ExecuteStreamCommand/) (read 2026-09-27) - Pentaho Data Integration: [`Execute a process`](https://docs.pentaho.com/pdia-data-integration/9.3-data-integration/pdi-transformation-steps-reference-overview) (read 2026-09-27) - RapidMiner Studio: [`Execute Program`](https://docs.rapidminer.com/latest/studio/operators/utility/scripting/execute_program.html) (read 2026-09-27) - Talend: [`tSystem`](https://help.qlik.com/talend/en-US/components/8.0/system/system-component) (read 2026-09-27)