Runs an operating system command specified by the user and writes the output of that command to a FlowFile. If the command is expected to be long-running, the Processor can output the partial data on a specified interval. When this option is used, the output is expected to be in textual format, as it typically does not make sense to split binary data on arbitrary time-based intervals.
command, process, source, external, invoke, script
In the list below, the names of required properties appear in bold. Any other properties (not in bold) are considered optional. The table also indicates any default values, and whether a property supports the NiFi Expression Language.
| Display Name | API Name | Default Value | Allowable Values | Description |
|---|---|---|---|---|
| Command | Command | Specifies the command to be executed; if just the name of an executable is provided, it must be in the user's environment PATH. Supports Expression Language: true (will be evaluated using variable registry only) | ||
| Command Arguments | Command Arguments | The arguments to supply to the executable delimited by white space. White space can be escaped by enclosing it in double-quotes. Supports Expression Language: true (will be evaluated using variable registry only) | ||
| Batch Duration | Batch Duration | If the process is expected to be long-running and produce textual output, a batch duration can be specified so that the output will be captured for this amount of time and a FlowFile will then be sent out with the results and a new FlowFile will be started, rather than waiting for the process to finish before sending out the results | ||
| Redirect Error Stream | Redirect Error Stream | false |
| If true will redirect any error stream output of the process to the output stream. This is particularly helpful for processes which write extensively to the error stream or for troubleshooting. |
| Working Directory | Working Directory | The directory to use as the current working directory when executing the command Supports Expression Language: true (will be evaluated using variable registry only) | ||
| Argument Delimiter | Argument Delimiter | Delimiter to use to separate arguments for a command [default: space]. Must be a single character. | ||
| Output MIME Type | Output MIME type | Specifies the value to set for the "mime.type" attribute. This property is ignored if 'Batch Duration' is set. |
Supports Sensitive Dynamic Properties: No
Dynamic Properties allow the user to specify both the name and value of a property.
| Name | Value | Description |
|---|---|---|
| An environment variable name | An environment variable value | These environment variables are passed to the process spawned by this Processor Supports Expression Language: false |
| Name | Description |
|---|---|
| success | All created FlowFiles are routed to this relationship |
| Name | Description |
|---|---|
| command | Executed command |
| command.arguments | Arguments of the command |
| mime.type | Sets the MIME type of the output if the 'Output MIME Type' property is set and 'Batch Duration' is not set |
| Required Permission | Explanation |
|---|---|
| execute code | Provides operator the ability to execute arbitrary code assuming all permissions that NiFi has. |