An alternative method without changing the installation directory is using the command inside double quotes ex: "C:\Program Files\MSC.Software\Marc\2019.1.0\marc2019.1\tools\run_marc" -jid input_file
An alternative method without changing the installation directory is using the command inside double quotes ex: "C:\Program Files\MSC.Software\Marc\2019.1.0\marc2019.1\tools\run_marc" -jid input_file